Common among the student population, particularly sixth form.
Opposite of a bus wanker.
#2 "Aw, he's driving over. Car wanker."
Car Wanker: "Awww you still get the bus? I drove over." *flashes keys in none-subtle way*
#1 "Sorry I'm late, stupid bus. Bloody freezing too...:("
Car Wanker: "Ahh yeah buses, I remember those. I got here ages ago, nice warm drive over..."