I stopped by my girlfriends house and when I got back to my car, I find out that someone has drawn a line all the way from my fender to the quarter panel.
How the hell do I get it off? I used rubbing alcohol and got most of it off but there is still a trace of the line.

 

a car polish maybe?

 

Never use rubbing alcohol on the paint. Rubbing compound should remove the marker.

 

Go to a hardware store or Wal-Mart. Get a can of "Oops." It's clearcoat safe and it'll remove almost anything. Even spraypaint.