Toyota is selling the Mirai fuel cell vehicle running on hydrogen, and plans to boost tenfold the global sales of the Mirai with the second-generation Mirai.

The new Toyota Mirai will have a 30% increase in driving range to around 650 kilometers (404 miles), the carmaker said at the end of November. //

The average price for hydrogen fuel in California is about US$16/kg — gasoline is sold by the gallon (volume) and hydrogen by the kilogram (weight).

To put that in perspective, 1 gallon of gasoline has about the same amount of energy as 1 kg of hydrogen.