The car ... Cars drive me crazy and I always end up wet or naked in a sexy car.
Having sex in your car implies some special movements and motivation as the small space isn't allowing for many options. You can of course start by playing with yourself or your partner to get the mood hot.
The it's about finding a quiet place ... Or not.
I like to blow Paul while on my knees on the passenger seat, exposing my butt at the window ... That Paul may open or not ...
Giving him a blowjob while he drives makes me come too but I wouldn't suggest that one ... It's dangerous.