1,000 mile range?
I guess if the hydrogen tank blows up, you will go into space some 1,000 miles UP.
New astronauts in the making. ;)
My understanding, in regards to hydrogen, is that if the tank gets piereced, it will escape from the tank too quickly to have much of a reaction. It’s a gas, so it will assume the size of the container. If the container is the whole planet, it will spread itself out in an instant.
I think exploding tanks are not really an issue with hydrogen, at least from what I’ve been able to find out.