Of course, all of these cars are chock full of computers, speakers and monitors, but none of them ever tell you what's wrong in a more intelligible way than wild screeching.

I spent half an hour outside in the cold at 2am with a borrowed Nissan Leaf. It only made a loud beeping noise when I tried to lock it. Apparently, this noise means that the trunk isn't properly closed and that it therefore won't lock the car for you.