Hybrid cars enjoy the same fuel economy benefits as simple gasoline or diesel powered vehicles. In hybrid vehicles the internal combustion engine runs almost all the time so savings are maximized.
The electric motor is only used during periods of inefficient driving and also to recollect otherwise wasted energy during braking.
Our system automatically turns on and off as required. During the infrequent periods (typically less than one minute) when the vehicle operates 100% on electric energy, hydrogen will be off and the economy cannot be improved.