As far as I know hydrogen is currently mostly derived from fossil fuels. Electrolysis would be possible but it's expensive and still less energy efficient than

As far as I know hydrogen is currently mostly derived from fossil fuels. Electrolysis would be possible but it's expensive and still less energy efficient than a pure battery-electric vehicle. People are willing to pay a premium for electric cars because they're greener. This DOES NOT APPLY to hydrogen fuel cell cars.