pop cans on the roof?

I am shopping around for a new roof. we need one desperately. I found an Ohio company, Classic Metal Roofing, that makes a recycled aluminum roof. I think it's made from old pop cans. They claim it reduces attic heat gain by up to 34 percent, and can lower home energy costs by up to 25 percent. It's made from 95 percent recycled aluminum. It fits over your existing roofing, so the old shingles don't got to the landfill, and it's guaranteed for 40 years.

No word yet on how much it costs. I am going to call the dealer today and ask for an estimate. I hope it isn't out of our price range. It sound too go to be true!