very clever idea, but far less efficient than Alstom’s underground catenary technology (called APS), introduced in 2003.

While the electrolysis efficiency is fewer than 100%, this car will only be an electric car with less autonomy than a battery powered one, or worse, a thermic hydrogen fuelled car, with even less autonomy. The only way to have a water powered car, more...

It is not at all something new. Human powered vehicles (i.e. faired bikes) could achieve 50 mph in 1979 already. for more information, see http://ihpva.org/hpva/hpvarec3.html#nom01