yup, I've had a shop take my car on a "test run" back when I had my 97 gtp.

at the shop I work at, from time to time me or a mechanic will take a car on a road test (it needed it anyway) and kinda beat on it to see what its got, but we always make sure we are far away from the shop so they cant see us.

I dont peel out or nuthing, just a quick jab at the throttle and see what its made of.