It's interesting you ask...
My uncle told me a story about how when he was a teenager in the 70s he would hitchhike everywhere. Everywhere in the PNW.
One time he was dropped off at an exit on I5 that another guy was already waiting at. So the first guy got to hitch a ride with the next car that stopped.
Next car that stopped was a guy driving a Datsun pickup truck.
First Hitchhiker gets in the truck, sits there and chats for a moment, gets back out, closes the door, and the truck drives off.
Once he got back to where my uncle was standing my uncle asked, "What the hell was that?"
First Hitchhiker says, "When I got in and closed the door, the driver whipped his dick out and said 'I like to jerk off when I drive, and I like my passengers to join me'."
So yeah.