Founds a glitch, if your using the bigger ship, you can do it.
1. Hold up until your ship stops at the top of the tunnel.
2. STILL HOILDING UP click outside of the game screen. (Not in the chat either)
3. you can let go of up now lol
4. Wait, the longer the better. Don't click the screen.
5. After waiting, click the screen and keep flying, after a bit you'll get to a wierd part of the tunnel. Asteroids occasionally appear outside of the walls. After a while the screen will freeze and a bunch of random lines will appear. you have to reload the page after that. I might suggest dying.
 "Rubble Racer"){kind=icon}
 "UPGRADE COMPLETE!"){kind=icon}