I doubt it, GM isn't called the "General Motors Company" Its called the General Motors Corporation. Its probable a trick to doop buyers into thinking that a big name in automobiles supports it. But hey, I could be wrong.
considering "superconductors" only operate at very cold temps -100C I highly doubt one word of what thier saying is true. If it did work, I think the manufactures would be scrambling to add it to production cars.
yeah, but how much does the second one cost? Judging by the picture, it looks a little more complicated, so It looks like it would work better than something you just wrap around your fuel line. For $70, the first one seems like a crock of sh*t, but at least they have a 100% money back guarentee. Still, what are they guarenteeing? The first one looks like an infomercial too... They drag out EVERY point and make it sound exciting.