Didnt you take the guy for a ride and slam some gears with him in the car ?????
Sounds like he didnt want to drive it cause they already messed it up !!
A guy down here has had three fires at his shop.I dont think they like him either.
It was quite funny when you drove away and come back. The guy would get real pissed and ask: What the Hell did you do to it,it ran fine before you took it !!