Pretty much like yours.
All cell was allowed except virocyte like yours
But the keratinocyte are limited, you only may have 2 on your racer and the win condition can be reached by finish those lap.
You may change organism and destroy the old one when you reach other Checkpoint/Race part
Maybe we can add race mode:
-Checkpoint/Part race (Play on a part/checkpoint only)
-Whole Lap race (Turn around to the finish line)
-3 Lap race (Pass the finish line 3 times)
-Time attack (Finish Race on targeted time)
-Attack/Derby mode (VS other racer using special weapon)
-Perfect race (Touching the track edge is not allowed)
-Global mode (VS other racer from this forum and see who have the best racer)