Toyota will Introduce Hydrogen Powered Vehicle To The U.S market by 2015

 There is plenty of talk over the facts that some people praise and some people ridicules the use of Hydrogen as a practical fuel, some people such Elon Musk does not like the idea, but others such as Toyota think it is an excellent idea.
   So what is Hydrogen? Hydrogen is the most abundant gas ins the solar system, Hydrogen is the most abundant substance on earth roughly about 75% of the Universe is Hydrogen or Hydrogen based, and also the it has roughly about three times more energy per mass compared to gasoline.

https://en.wikipedia.org/wiki/Energy_density

   The fact is that Hydrogen is a reliable fuel, yes the methods of extracting it today need a little improvement, and we probably dont have the necessary infrastructure to implement a Hydrogen based fuel delivery system, but the fact is we didn't have it either when Henry Ford introduces the model T.

 

http://www.digitaltrends.com/cars/toyota-to-sell-50000-hydrogen-car-in-u-s-by-2015/

other sources include wikipedia, and google.