[Sabertooth]

There are other concerns with hydrogen. Scientists are still struggling to devise a safe and efficient way to store the hydrogen. If stored as a gas in high-pressure tanks, it could pose a safety risk.

No kidding.

Dump the Hummer. Drive a Hindenburg.

[libstripper]

Storing it as a liquid is a real yuk too. It's as close to absolute zero as it's able to get. This requires really sophisticated tanks, normally available only on liquid fueled rockets. Anything it touches is frozen instantly, so you cna't wash your hands in it the way you would gasoline. If a tank ruptures, something that never happens in auto accidents, there is an instant, massive cloud of explosive vapor.

[Chemist_Geek]

The fire was from the paint containing finely divided metal grains, not the H₂ aboard.

Gasoline is orders of magnitude more flammable and dangerous than H₂. We're just lucky that gas was popularized before Americans lost their balls and got so risk-averse and sue-happy.

[upcountryhorseman]

Incidently, it wasn't hydrogen that ignited initially,
it was the exterior paint.