Micro racers

No two races ever the same!

Updates: now more competitive! More overtaking! Added position bar.
New update: "unable to finish" checks abort the race if no racer can finish.
Bug fix: sometimes the finish line didn't activate. Hopefully it won't do that any more.
Update: Removed position lines. Added TRON TRAILS!! Improved race abort detection.

Newest update: changed handling of race-abort, race is restarted instead. Added high scores, just for fun.

Bugfix: racers giving up when they shouldn't