They are not exactly durability tested since they are mostly hand built so things do need much more attention on a much more frequent basis (nearly constant). They have a small crew that maintains them, preps them for media test drives and shows, etc. and keeps them looking brand new and undriven.

 

Well I know they've had to put new coolant in the silver concept at least once.

 

Tons.......including repaints and damage repairs (such as cracks and chips) -- these cars have been all over the world -- on airplanes-- in temp. controlled carriers -- you name it.......

All modern-day concepts as a rule are fragile -- the Camaro Concepts are probably the most 'robust' concepts we've done in many years -- simply because we knew they'd garner a lot of attention-- further, Design specifically built them with stronger door hinges and hood and such -- because we knew that the doors and hood would spend an inordinate amount of time in the open position. (note that most concepts NEVER have their doors opened on a turntable.....)