they used my 50 for a photo shoot and print ads for their "like a rock" series. the group i worked with was great. really took care of the truck, trailered it to the site, and had it insured for some un-godly amount of money. i requested that i be at the shoot to make sure they didn't do anything weird so they put me up in the same resort that the rest of the crew was staying at and the catering truck was very well stocked so i didn't go hungry either.
they also used my truck in a movie and my experience with that was very similar. also requested that i be on the set and it was no problem.
they used my motorcycle in a levis commercial a few years ago. they had some guy (biker dude) who was supposed to ride it for the filming but by the time they hung all the camera gear on the bike, it handled a little strangely so they had me ride it instead. if they're going to have someone driving it, make sure they know what they're doing. if you drive it they should compensate you for your time as well as the "rent" of the truck. you may have to sign a waiver if there's a chance your face shows in any shots. the waiver just lets them off the hook for having to pay you any more money.
most importantly, don't let them do anything to the truck that you don't want them to.
hope this helps!
