A vehicle which has the capacity to operate using two different fuels (e.g., Compressed Natural Gas and diesel or CNG and gasoline) or a vehicle that runs on hybrid propulsion (e.g., fossil fuel combined with electric power) where an onboard generator powered by an internal combustion engine or fuel cell supplies electricity. In combustion, the hydrogen is "burned" in engines in a similar fashion as traditional gasoline-powered vehicles. In fuel cell conversion, the hydrogen is turned into electricity through fuel cells which power electric motors.