Yeah, I can just imagine the results of a car with a liquid hydrogen tank getting rear-ended.
Well supposedly, the hydrogen leaks out before anything can happen. The Zepplin only went kaboom because of the sealant they used on the canvas.
https://hydrogen.wsu.edu/2017/03/17/so-just-how-dangerous-is-hydrogen-fuel/
Like a Pinto?
The good news about burning hydrogen is that it goes up (in the literal sense) very fast. It doesn’t splash, stick to things, and ignite them. The bad news is that hydrogen can burn with an almost invisible (in visible light, not IR) flame.