Once one gets chucked into the grandstands they'll figure something better out right quick.

My opinion, fuel cells either need to stay attached to the car or live with what we have now. A detached fuel cell tethered to a crashing car creates more problems than it solves.

Late Models went through this starting like twenty years ago. Now every major series mandates FIA-approved cells and there's about no wiggle room in the mounting system.