There are four important factors for the improvement of the battery: 1. production cost 2. capacity 3. charge rate 4. life span Double any two of these and al

There are four important factors for the improvement of the battery: 1. production cost 2. capacity 3. charge rate 4. life span Double any two of these and all other fuel sources are done. Double any three of these and its a transportation revolution. Certainly doubling two of these is possible within the next 10 years (assuming the fuel cartels to not succeed at sabotaging the R&D). So I fully agree with Elon, Hydrogen is a waste of time, money and ... wait for it ... energy.