New cars to be released in 2013 will have one thing in common: powered by fuel cell instead of oil. As pollution-free clean energy, fuel cells are mechanisms which are fed hydrogen to produce electricity and heat, emitting no soot but water.
Fuel cells, available for any transportation means as well as cars, will create a huge market.
After 2020, reactors will be built to mass-produce hydrogen, a clean energy source, at reasonable costs, and solar energy is expected to be processed from inhabited space cities and sent to Earth.
Sources:
http://english.donga.com/srv/service.php3?bicode=020000&biid=2005051883638