Tata Motors (India) is developing the Air Car - a
hybrid compressed air / petrol car that is already
getting over 100 MPG.

http://news.bbc.co.uk/2/hi/science/nature/7243247.stm

It is very odd, because mainstream US press has not written anything about it. Wired wrote a feature article about Tata last month, but made no mention of the Air Car.

Zero Pollution Motors is a New Paltz startup that is doing the same thing:
http://www.popularmechanics.com/automotive/new_cars/4251491.html?series=19

General Motors is also developing a compressed air / petrol car with the University of California.

It is amazing that lack of news coverage of this amazing development.

Please see my blog page at
http://makesusdumb.wordpress.com/2008/06/16/the-best-invention-youve-never-heard-of/
for more links.

-Devang
ADVERTISING Makes Us DUMB
http://makesusdumb.wordpress.com