What is Go To The Car??
1.
"Would you have sex with her/him?"
or
"Would you do her/him?"
Spawned out of Australian universities, "Go to the car?" is a substitute for asking your friends if they'd have sex, or "do" a girl/guy you see.
You're walking down the street with your mates, and you see a really hot chick, but obviously you can't ask "Would you do her" right there and then, so you say "Want to go to the car?", or simply just "Go to the car?"