Magnetic Motors - The end of gasoline?

I saw in a popular mechanics mag a while back some ol boy in Britan converted a little dinky British car to run on compressed air. No lie. I said air. He claims that he is going to make conversion kits for numerous applications. Wonder if he has one for my dads 78 454 chevy 1 ton? All I can say is you better get one hell of an air tank.....