GM’s Autonomous Vehicle Software Written Primarily By AI

Matt Posky
by Matt Posky

While much of the focus on General Motors' first-quarter earnings call revolved around rising material costs and guidance adjustments based on government tariff refunds, CEO Mary Barra also announced that roughly 90 percent of the code pertaining to autonomous driving was being written by artificial intelligence.


The next incarnation of GM’s Super Cruise semi-autonomous driving technology is supposed to be a major upgrade from the current system. Scheduled to launch in 2028 on the updated Cadillac Escalade IQ, the feature will reportedly go from being “hands-free” to something that will actually allow you to take your eyes off the road while rolling down the highway — provided that you’re still okay with being permanently monitored by in-cabin cameras.


Vehicles will also have unique exterior lighting (below) that will indicate when they’re being driven autonomously, come with upgraded sensing equipment, and use the new SDV 2.0 (Software-Defined Vehicle) computing architecture. However, the resulting code will be overwhelmingly dependent upon AI.


CarScoops quoted Barra as saying “nearly 90 [percent] of the code written by our autonomy team is generated by AI,” adding "[the] way we’re building this technology is a reflection of how seriously we’re embracing AI across the enterprise.”

While artificial intelligence has proven itself capable of quickly writing code for all manner of applications, it does come with some drawbacks. Since algorithms are only as good as their training data, any resulting code will only be as good as whatever data GM originally fed into the system. The trade off is dramatically increased coding speed without much in the way of innovation.


Studies from 2023 have estimated that publicly available AI platforms that specialize in coding (e.g. ChatGPT, GitHub Copilot, or Amazon Q Developer) only manage to produce the correct code somewhere between 30 percent and 60 percent of the time. Additional research from the same timeframe also specified that less than three percent of developers possess a high level of trust in AI coding. Although 39 percent admitted to trusting it enough to use algorithmic coding to a limited degree, provided they could double check the work.


Another concern with AI-generated code is that it often doesn’t account for things like intellectual property or cybersecurity. Since artificial intelligence cannot truly understand context, it will often gloss over important aspects that fall outside the purview of the original prompt. Borrowing preexisting code can create other problems, too. In addition to potential IP theft, this can sometimes lead to bloated software that’s difficult to maintain and prone to be buggy.


Considering that Super Cruise is something people will quite literally be betting their lives upon, it seems reasonable for customers to expect nothing but the absolute best code from auto manufacturers.

GM has attempted to assuage concerns by noting that it’s capable of simulating a lifetime's worth of driving data every single day. While that’s certainly impressive, and presumably helps with bug testing, digital simulations are not reality. We’ve seen Waymo, which is often viewed as the industry leader in autonomous driving, frequently struggle when its test vehicles are thrown a curveball in the physical world.


At the end of the day, AI has proven itself to be fallible. Those that have interacted with AI-driven search engines will have undoubtedly noticed that they will occasionally just make things up. But it’s the new hotness for investors, so companies are keen to mention that they’re implementing artificial intelligence wherever possible.


Obviously, the immediate consequences of having the software controlling autonomous driving systems fail would be quite a bit higher than Grok issuing a fake lasagna recipe. Digital assistants, which are becoming commonplace in modern automobiles, have also proven to be less-effective than advertised. So GM has a team of qualified individuals that are supposed to double check any code produced by AI. There is likewise a fleet of test mules that have been running the updated version of Super Cruise in California and Michigan.


The automaker wants to make clear that it's not simply handing the reins over to artificial intelligence. However, it still feels like the company is using its own customers to beta test the final results and we’ve already had too much of that from the automotive industry.


For some motorists, this won’t really change much. Software-defined vehicles, rampant data harvesting, in-cabin surveillance, the normalization of touch controls, and ceding user control via “Advanced Driver Assistance Systems” had already crossed the line of acceptability. However, there remains a subset of drivers that like the premise of Super Cruise and they’ll need to decide if they’re truly comfortable with it being AI coded.

[Images: General Motors]



Matt Posky
Matt Posky

Consumer advocate tracking industry trends and regulations. Before joining TTAC, Matt spent a decade working for marketing and research firms based in NYC. Clients included several of the world’s largest automakers, global tire brands, and aftermarket part suppliers. Dissatisfied, he pivoted to writing about cars. Since then, he has become an ardent supporter of the right-to-repair movement, been interviewed about the automotive sector by national broadcasts, participated in a few amateur rallying events, and driven more rental cars than anyone ever should. Handy with a wrench, Matt grew up surrounded by Detroit auto workers and learned to drive by twelve. A contrarian, Matt claims to prefer understeer and motorcycles.

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  • 28-Cars-Later 28-Cars-Later on May 11, 2026

    What could go wrong?

  • TMA1 TMA1 on May 13, 2026

    AI coding isn't better, but it is cheaper and faster. This is GM's way of saying, "we'll save more than enough money to pay off the families of the people who die because of this, and still come out ahead."

    • Luke42 Luke42 on May 14, 2026

      “AI writes our test cases, too, it’s a perfect system!”


  • Amwhalbi My 1972 Mercury Capri was my first stick shift car. God, I miss that thing. It was a blast to drive.
  • Vid169489471 The technology exists today to produce a variable color temperature (kelvin) LED lamp. It can vary from 2700k that soft orange look to 6500k the bright daylight with the bluish tint.Since everything in a late model car is computer controlled, it would be an easy task to write a few lines of code that enables your vehicle to not only dim down from hi to low beam but to shift color temp down to the 2700k range for oncoming traffic, then back up to 5000k once oncoming traffic has passed. For the operator it would be automatic and seamless. For older cars they could be retrofitted with LEDs that are 2700k on low beam and 5000k on hi beam. As far as standards, there could be a lumens max, and a minimum. Several States already have minimum lumen standards going back to the old incandescent bulbs. Why not update these to national standards.
  • Jam169859557 More regulation is needed for ALL vehicle lighting systems. [list=1][*]The lighting that is most blinding are the rapidly flashing red, blue and amber lights on emergency vehicles. The lights themselves are blinding, flashing so rapidly that it's impossible for even the sharpest eyes to adjust. What's worse, is the nature of the emergency requires a careful view of the area surrounding the emergency vehicle. There is something going on that needs to be seen. More flashing lights is not the solution.[/*][*]Brighter headlights need to be regulated. The tall riding vehicles do not need headlights positioned so high that they blind drivers in lower riding vehicles. And those heasdlights need to be aimed properly. When I first started driving my 2020 Subaru Outback, many drivers would flash their lights, hoping I would dim my lights. This stopped after I performed am easy adjustment that tilted the beam lower. Late model Subaru headlamps are designed with a sharp cutoff that project less glare above the hood line. When the headlights are properly aimed, other drivers are not blinded by the beam.[/*][*]Customized light assemblies make it more difficult to see the marker lights (tail lamps, turn signals and side marker lamps) that have been tinted. There are many municiple codes that prohibit this tinting, but these laws are seldom enforced.[/*][/list=1]Solutions: Tight controls on emergency vehicle lighting. In trying to make these vehicles more visible, a dangerous side effect is reducing the ability of drivers to see the surrounding perils.Headlight design regulations that reduce the height of the headlight assemblies. Just because a pickup truck has a hood that sits 4 feet abouve the pavement, it does not mean the headlights need to be so high. Owneres should maintain proper adjustments to their vehicle headlights.Establish and enforce regulation requiring a illumination standard be followed.
  • Stl170698708 as someone who hates big government, and their interference;but you can add me to the list of people that are blinded by the lights.unfortunately "the poop is out of the horse and no way is it going back in"They have had 5 years to make lights bigger, badder and brighter because in the vehicle work it is go big or go home!Trucks are the worst because so many people use them to express their dominance and that is big, big, big $$ both at the Original Purchase and in the Aftermarket world.If, we are so lucky to get some good government regulation on this it will also take some very good Court enforcement to get the aftermarket people with fines and lawsuits.Much like the EPA did with the Diesel Tuner Industry that felt emission regulations didn't apply to them.This is from someone that owns said pickup truck with the same bright headlights,but i only use the truck when I have too and always turn off the Fog lights when driving in traffic.
  • Art65765977 I saw a porsche 911 with the most amazing headlights from behind approaching the Sunshine skyway in Florida. The pattern was 108 degrees across sweeping the road like a broom. My brother and I were amazed. I don't know what it looked like from the front but i am sure it was better than American cars
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