At the 2015 North American International Auto Show at Detroit, Honda rolled out the next generation of its fuel-cell vehicles called the FCV. Using hydrogen as the vehicle's primary power source, Honda is also investing in the technology across California.
At CES 2014, Toyota will show off its latest Fuel Cell Vehicle concept, a car that converts hydrogen to electricity.
In addition to a new hydrogen fuel-cell model coming next year, Honda outlines its plans for new battery and hybrid cars by 2018.
Environmental organization EMA sponsors a contest to win Toyota's first production fuel-cell vehicle, at $100 per entry.
A closer look at Toyota's fuel cell concept vehicle that is expected to enter production in 2015.
Toyota is considering a more emotional design for the upcoming Prius.
The car company on Monday talks up its bet for electric cars, which it plans to launch in California next year.
Taking center stage for Toyota at CES 2014 will be its Fuel Cell Vehicle concept car, which will demonstrate Toyota's research into clean automotive energy.
Toyota's hydrogen-powered concept car slated for production in 2015 will make its European debut in Geneva.
The 2013 Tokyo Motor Show has everything from zero-emission sci-fi concepts to a jaw-dropping tractor. Check out some pics in our gallery.