Re: Terrible idea!
"I, for one, would like to see ejection seats in passenger cars."
So do I. No need to make an exit hole in the roof, as a matter of fact, some reinforcement might be a good idea. And non-stick coating.
think of all that weight you'd be carrying round.
better to plug it into the GPS and only have it operate when you are under a bridge.
added advantage... less splashes on the driver
You see, that's why I come here: solid engineering discussions, solving real life problems in a practical fashion :)