great news about dome,
re hydrogen, just think of it as an electicity storage medium, you pump elec into water, save the hydrogen, burn the hydrogen to generate power and water, if you burn it in a power cell you create the power as electricity for motors, if you burn it in an engine you get lots of lovely noise
hopefully we'll see more people backing hydrogen for road use and therefore racing, after the UK gov followed california's lead, it offers a far more practical method of fueling a car (indirectly) from electricity as the refueling time is a couple of mins rather than 6 or 8 hours and it also allows manufacturers the choice of fuel cells/ electric drive or to retain internal combustion engines for types of cars that suit that engine such as sports cars and competition