Dennis Roady, a full-time YouTube prankster, may have been lucky to get away with his life at the Detroit Auto Show. His mobile app called “Dude, your car!” permits users to morph photos of cars to make it look like they are scratched, dented, wheel clamped or even on fire. In this video he shows pictures of “damaged” cars to various car keepers and auto company people and records their alarmed reactions. Not hilarious (we think) but entertaining as psychiatry. They treat him nicely in the circumstances.