i would drive it stedily for a while and they comment on what the car is capable of, and then progressively show him, not hoon it round like a loon!

that way he gets the impression that it is very well lokked after as tyou have let everything warm up to corect levels etc and also that you can drive it sensibly etc! but it also gives him the sense of what the car can do and the power behind it!

but burnouts and donuts would be a big big no no! would you really want a car that you thought had had that done to it all the time! i know i would definatly walk away!

GOOD EXAMPLE - went to see a calibra with a mate and the bloke commwented on how he never drives the car as it was his wifes and then proceededs to cain it along a very windy road! then swaps over with my mate for him to test drive it and he was telling in to leave it in third etc and when to brwak for corners and then having a go at how he breaked so much for a really really tignt and blind corner that was over 90 deg followed by the same but the other way! not the way you sell a car really is it! so we left that!