Although in theory, they could solve some problems, ever since autonomous vehicles came on the radar big time, my concern is how easily were their systems able to be hacked.
I believe it's already proven that they can be to some extent, through the gps and other sensors they use.
So it seems inevitable that it will be done, either for "fun" or deliberate malice.
Could be a real problem, once a lot of them are on the road - Hopefully, I'm wrong