Long the next big advancement in green transportation, hydrogen may have missed its chance to become a major fuel for light vehicles.
Even as technology advances, battery-electric vehicles have quickly become the green vehicle of choice for most U.S. consumers.
Tesla, which offers only electric vehicles, sold nearly 187,000 cars in California last year, trailing only Toyota's gasoline autos in market share in the state. During that same period, Toyota sold just 2,094 of its Mirai hydrogen fuel cell cars nationally.