Falcon fool and KawAbuser, I hear what you're saying but there is a liability issue also. Plenty of customers who say "don't you dare let some service jerk take my new bike for a test ride" are also the first ones who will call up a lawyer and sue a dealership because they say something fell off their bike and they wrecked after the dealership worked on it.
The dealership has some right to cover their *** by testing the bike after working on it. The key is one word; "Professionalism". In other words, like Johnnycheese said, know your tech. If the service manager is letting some 18 year old punk test ride your ZX-12, or the tech is an unprofessional jerk and beats a customer's bike, they need to be fired. Better, you need to not go to that dealership.
A professional tech at a professional shop will do a proper test ride on your new Busa, ZX-12 or other hot new machine. Check acceleration, check turning, check braking, take it back to the shop. If you have a professional tech, and you know he is, you don't need to worry about it. Trust is a rare and valuable thing. It has to be earned.
[This message has been edited by Mr Bear (edited 18 March 2000).]