> Per mass hydrogen is pretty attractive. A bucket of gasoline contains more hydrogen than a bucket of liquid hydrogen, and you can actually keep the gasoline

> Per mass hydrogen is pretty attractive. A bucket of gasoline contains more hydrogen than a bucket of liquid hydrogen, and you can actually keep the gasoline in the bucket. Hydrogen is awesome as an energy source if you look at the combustion formula and the per-mass energy density. In all other aspects it's a horrible, horrible, horrible fuel. :-)