100 MPG out of a Hummer H1

[carmelmonteverdeinn]

What do you guys think of this:

http://www.fastcompany.com/magazine/...tml?page=0%2C0

This guy claims to get 100 MPG out of converted hummers. The article talks about:

- Benefits of diesel vs. gasoline engines (Good)
- Use of natural gas diesel dual fuel vehicles (OK)
- Use of diesel/hydrogen dual fuel vehicles (Sketchy... efficiency claim doesn't make sense to me).
- Use of 'supercapacitor' batteries for hybridization. The engine fully charges the batteries in 'seconds' (Bad...)
- Super quite engine due to the lubricating properties of vegetable oil (Very bad)
- Big conspiracy at the auto manufacturers to not use any of this technology (Very very bad).

Am I missing something, or is this assessment about right?