So it runs on 4,500 psi compressed air? Is that all it uses for fuel is 8 gallons of compressed air? It says it has an onboard compressor. I don't think there is enough energy in compressed air to have that much power. I hear liquid Nitrogen has around the same power as gasoline but you gain a lot by going from a gas to a liquid.
Safety my buttocks, if my 7,500 pound truck hit you 1,900 pound air car you are in big trouble.