That's what I thought.
Look, I'm not going to waste my time trying to bring you up to speed on either the nature of hydrogen or storable missile propellants, but the statement I am ridiculing, that these trailers might be used to either produce hydrogen or rocket fuel, is akin to someone claiming an expertise in electronics disassembling a square box with a glass front and knobs, and then declaring that he doesn't know what it is exactly, but he thinks it could either be a color television set or a microwave oven.
Anybody else having trouble following this reasoning?
Try thinking for a change.