Let my coworker drive my Z when we went out to lunch together.
He was asking about the paddle shifters (I have AT) and then all of a sudden he pulls it a couple of times, drops the tranny down a couple of gears and redlines the car
I was like "Whoa dude, slow down -- I just passed 1000 miles on the car and was holding out a few more days to get to 1200 miles to make sure the engine was broken in"