Hydrogen thing took big step back few years ago when Hydrogen fuel station blew apart back end of Rochester Airport. GM paid to remove resedue and den moved Hydrogen lab out of town fast. Speculation is GM not real good in Hydrogen after dey showed how good it worked getting Congressman from Rochester to Swamp in Hydrogen car. Dey needed 5 hydrogen cars, 3 trailers and 3 pickups to make trip cause dey got no idea AirGas sells Hydrogen along de route.
Now GM got new electric from coal car coming out. Dey even pretty sure you can park in in garage attached to house unlike Chevy Volt self lighting model. Keep your fingers crossed.