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 in NYC. Clients included several of the world’s largest automakers, global tire brands, and aftermarket part suppliers. Since adding automotive writing to his repertoire, he has become an ardent supporter of the right-to-repair movement, discussed the status of the automotive sector on national broadcasts, participated in a few amateur rallying events, and driven more rental cars than anyone should ever have to. Handy with a wrench, Matt grew up surrounded by Detroit auto workers and learned to drive by twelve. Alleged to be 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!”


  • SCE to AUX KBB says that the ATP of new vehicles was $50,526 in September. As a group, buyers afforded that much, but we know that some (up to 6%) will default. Deducting 6% from that ATP, we get $47,494.So anything lower than that is 'more affordable', and anything higher than that is 'less affordable'.
  • Tom170698702 It's time to stop recycling old articles. This one is almost 3 months old.
  • Oberkanone Dacia makes product line of affordable vehicles. An entire product line. One vehicle is not the answer for all needs. Dacia does affordable well.
  • YaMoBeThere This is an egregiously bad AI generated article, the middle of the article is repeated twice... but yea go ahead and nitpick about my comment pointing that out
  • Slavuta Is this Ok if I use OEM all weather floor mats? Yes, the ones that came with 2011 Mazda3 were not good. But the ones in 2017 Mazda6 are excellent. BTW, in that picture, Grand Cherokee on Kumho tires. Is this also an advert or just coincidence?
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