Piston engine Racing version V4.1

NOW SERIOUSLY FASTER
Z :engine on off
C:brake
F:electric starter
Micro rc for time ctrl
Sometimes it bugs and stop working then just reload the level

I know looks so horrible but i had no time for desing and also the more weight=less velocity

NOW WITH MORE RIGID SUSPENSION,MORE DENSE PISTON AND LESS WEIGHT
This version has less torque but more speed

UPDATE 1: POWERFUL SUPERCHARGER , TOP SPEED AUMENTED.
UPDATE 2: I DISCOVERED THAT MORE NEAR IS SUPERCHARGER, MORE THE MINES WILL GO FAST
Update3.1:little improvements
Update 4.0: discovered that 0.20 is the best density for piston, increased RPM and Max Speed and also now the engine is BUG FREE
And also now the supercharger is automatic.
Update 4.1: little improvement for the supercharger.
SUPER SPEEEEEEEEEEEEED