Okay, so I'm trying to quickly make a racetrack that will look rather roller-coaster-like. It's going to be relatively skinny but long. It'll go up and down like a hill and have turns so it spirals back under itself, etc. What's the best fast way to do this in Maya? I was thinking maybe using curves somehow would be best, but I can't figure out any way to extrude them other than straight up, which would make it so I'd have to draw out the track from a side view..