Scam-tastic!It's a magic magnet which improves your fuel efficiency! Imagine! Note that it used 'neodymium super conductor magnets'... Neodymium is a rare earth element magnet found in hard drives and things; there are no room temperature superconductors, so you'd better be ready to pour liquid nitrogen into your car a fair bit.
Also, it makes your air conditioning work better. And probably cures your cancer, too.
And people actually but this sort of nonsense!