Tesla has battery improvements in progress that they say will reduce charge time, cost and weight, while increasing charging cycles to give a million miles of durability. Their existing batteries typically exceed 250,000 miles.

Working on hydrogen for transportation fuel is like searching for the holy grail, or looking for Nessie.

I have been hearing about this for 6 decades now. WTH not go with steam? They were far superior in speed/power, no emissions, clean. The only problem back then was the dreadful failures of the valves to regulate the pressures. (Insufficient technology). I am pretty sure (example: nuclear reactors) that real good valves are now readily available!