That's fer sure Ryland. When I take my 106 cubic foot 4350 PSI scuba tank to get it filled,
I made darn sure it's tied down to the cargo clips. I would hate to have that thing rocketing around inside my car.
I think driving around in an HPA car would a bit more dangerous than using regular fuels.
I once saw a kid using way too much pressure while filling his bike tires in a gas station.
I yelled at him to stop, but he kept filling it. When that little tire exploded,
it wrapped a section of tire around his face at about mach 1..
He wasn't seriously injured, but the abrasions & tire marks were on his face
for days afterwards.
My point? Even low pressure air (under 400 PSI) can be pretty dangerous.