And what is the fuel tank/cell made out of
The fuel cells capacity varies from track to track. NASCAR regulates how much is allowed for each race. The fuel cells are located in the trunk area. They are a blend of kevlar material, rubber and (I think) a fiberglass composite.
I dunno wat that guys problem is CHUCK but the fuel cell is made out of sheet aluminium with a rubber safety bladder and safety foam inside. It's placed up between the frame rails inside a steel frame at the rear of the car ( in the trunk basically ) It holds 22 gallons.
