I’m sure they are some, but there are also some straight people that are into that. I think the whole highway restroom scene exists because it’s a way for married gay men to have enjoyable sex without being caught by their wives and with a person that doesn’t know them, so that it won’t ever get back to them later.
Well, that’s your opinion. Perhaps it’s valid. My opinion, however, is that many of the exhibi-fags who’re shoving large phalli into fecal orifi while riding naked on top of floats in San Francisco parades are also into the highway restroom scene. I mean, ain’t a parade scheduled ever’day now, is they?