The act of a woman giving you a blowjob while you're driving a car.
Danny: Dude, did you go the game last night?
Ed: Yea, i brought my girlfriend with me, and got an excellent gift for bringing her.
Danny: What did you get ed?
Ed: She gave me a car-job
Danny: What's that?
Ed: It's when a girl gives you a blowjob
while you're driving.
Danny: Nice Bro!!