Looks brilliant, but there has got to be a catch somewhere...
I didn't see how much it cost (probably a fortune!).
"HFI's manufacturer guarantees 10 percent fuel savings, which likely won't interest car companies or consumers, Raman said. But a reduction of pollution emissions could spur broader use. "
"The HFI units are relatively small and cost between $4,000 and $14,000, depending on the size of the vehicle. "
You'd have to do a fairly high mileage to justify $4,000 for a 10% increase in economy. I can see why it's getting put on trucks but probably not worth it financially on 4x4's at the moment
