Heh, I was speaking to a contractor some years back, their CEO had a fancy new car with an automatic parking feature ... chuffed to bits with his new car as he was, he wanted to show it off, so took it to a multi-story car park, got ready to show it off ...

And the car confused the shadow in front of the concrete wall for a space that was completely open and started reversing back at full speed. Fortunately, the CEO wasn't a complete idiot and managed to bring the car to a stop before writing it off...