I understand that in South Korea a lot of their vehicles are running on hydrogen. Very explosive! But I have not seen one report of any of these hydrogen tank explosions. Reckon none are getting involved in wrecks?
When I was growing up in East Texas, quite a few people ran their pickups and cars on propane, apparently as safely as gasoline.
Most likely CNG or LNG tanks are being designed to withstand severe collision and puncture incidents. There are many 18 wheelers and trains hauling 5,000 or 10,000 gallon tanks of LPG/LNG everyday.
Do you have links to any information on that?