Use the left and right arrows to gain speed and flip in air. Press spacebar to jump/boost, heh. All the jump does is increase your "y" position so it's not exactly like a real jump.
The finish line is the area that looks like an "e". If you turn on turbo mode and beat this then you deserve a reward (which I won't give you) but you're great at the game. My personal record is 58 there and back. Thanks to Griffpatch for basically the whole code, all I did was add steering, scuffed jumping, and a new map. Tell me in the comments what your fastest time to the flag and back was, and also if there were any new bugs. Thanks for playing and enjoy!