Karpathy is the reason why Tesla is now behind in a lot of their own AI areas.
You're supposed to tell the idiot Elon that actually, sensor fusion does work, and maybe we shouldn't remove radar and parking sensors.
But he didn't listen, and now the world is waking up to how shit Tesla's are. That's certainly part of why they're being heavily discounted right now. Just in time for the market to see the ROI on Elon's new bird shaped husk of a company.
Google is not behind in these areas in any technical sense, Karpathy just doesn't know what he's talking about.
He states this in his most recent interview with Lex Fridman. He doesn't go into much detail however. I recall him specifically stating that "maybe Bing will get another chance".
My comment would be higher quality with a link to the exact time on the video but I don't have time to do that atm. Suggest watching the whole video however, it is very good.