Car Racer (rglap)

First input race length and press enter.

Player 1 uses the Arrow Keys to control the red car. 

Player 2 uses WASD to control the green car. 

There are two goal posts that the players have to go through to count their progress.

However, please don't go back and forth through the goals because I have not figured out how to ignore cars going back over a goal multiple times.