I've been pretty lucky at this through the years
Back in high school I fucked several girls in my car or got a blowjob from them. Usually on this backroad that me and other kids used for parking. A lot of the times there was other cars there and that would make the girls nervous but after getting my hand in their bra and panties and getting a finger in their pussy they usually forgot about the other cars being there...lol
I've got this one married lady that I fuck every now and then at the grocery park in her mini van. It has dark tinted windows in the back and I'm pretty sure nobody can see inside but she's a loud cummer and if anybody is near by there's no way they can mistake what's going on in that rocking van...lol.
There have been quite a few other times through the years and i love doing it in public like that, it's so exciting