A few times I've been stopped at alight and someone stopped behind me bumps my vehicle. No damage but annoying. Typical explanation when I get in their face is 'my foot slipped'.

At regular intervals there is some writeup of cars that will drive themselves. I have mixed feelings about it. On one hand cars driving themselves is kind of scary in a "Christine" and "Terminator" kind of way. On the other hand how much worse could it be when humans can't be trusted to reliably keep their foot on a brake pedal.