C02 Pinewood Derby Car

Outlaw race. Put together a design that worked pretty well. Find the C02 housing here: https://www.amazon.com/gp/product/B00... 4 rules: 1. Has to go under a 7" finish line. 2. Cannot touch the car after set on the track. 3. Has to survive the brick wall at the end. 4. No combustion.