[RitchieAprile]

what happens when it overturns at speed? FAE?

[Rebelbase]

“what happens when it overturns at speed?”

Probably something like this:
http://www.youtube.com/watch?v=v43nWJ2aoNE

[thackney]

what happens when it overturns at speed?

The CNG tank is designed to contain thousands of pounds per inch of pressure. These tanks are carbon fiber and crash tested.

FAE?

Finely Accurate Elephants?

The following link has info on Gun Test, Dynamite Test and Severe Abuse Test on CNG Tanks.

http://www.oringcngfuelsystems.com/is-cng-safe/