Would depend on the person, but probably would just take it to the track and show them what it will do. One reason for that is I can probably drive my truck faster than they will. If they make a pass that's slower than mine (or what I say it can do) they would end up putting me in the scammer section of RJ and saying my truck is not as fast as I advertised it. :lol:
I've seen it happen a few times when a guy would sell his truck ( take a deposit or verbal commitment) and race it one more time and wreck it, burn it to the ground or blow it up. If I sell mine it's parked till the buyer takes the next ride.