All of their other investments are unremarkable.
I work for one of the big three - this autonomous stuff is way, way further out that what anyone is saying. I can't put a year on it because markets can stay irrational longer than you can stay liquid but it's all a head fake/game by upper management, who have finally found the Silicon Valley playbook of making wild ass promises now they that they've largely shed their pension obligations (my Dad, a slightly below classified level engineer at GM, will be taking the cash buyout instead of pension. Who can trust GM at this point? They've gone bankrupt before).
Big Three company with that's poised to actually make real profits? FCA. New Wrangler/Grand Cherokee/Ram/Wagoneer/Grand Wagoneer in the next 24 months. Today, those vehicles make the lion share of profits and its not even close. And all of those vehicle redesigns will have mild hybrids for their launch, as a hedge against oil going up. FCA improving quality by going upmarket/simply charging more. Dealer model isn't ideal, but that will change over time.