I used to get a kick out of the GoodGuys events (Cool Cars. Cool People. Good Times.). The cars were generally roped off for the indoor car shows and they didn't want anyone to even breathe on their rides. But the cars that participated in the vintage drag races might be worth twice what you'd see inside, yet they'd hammer them down the track... and they were cool with people standing next to or taking pictures with the cars. All about respecting people's boundaries.
One model described how she had to be lifted by two guys and placed on the hood of a car for a photo shoot - and she wasn't allowed to move around at all. Before they got started, when the owner saw that she was wearing heels, the heels had to come off... or she didn't go on. Still, I wouldn't allow a girl (even if she weighed next to nothing) to sit on the hood of my car. I don't care how cute her ass might be. Taking a chance of having two butt cheek impressions in an aluminum hood wouldn't work for me.