Pinewood derby motor powered by CO2

My friend used to join drag racing before he had an accident, he drives small cars and trucks to race. But when he made one small mistake that damaged his feet, his dreams was crushed. When he recovered and unable to bring back his legs to its normal function, it never stopped him in joining the race. This time its Pinewood derby where they run small cars.

If other cars run through batteries, this car runs through CO2 which made it really fast. My friend loved it and planning to make his own.

He only proves that you can always live your dreams as long as you follow what your heart desires.

Rest of the project