Here is an interesting tale for anyone looking for mystery and greed in the oil industries.
Here is a site which will shed more light upon this subject: http://www.deathofagasguzzler.com/profiles/blogs/tom-ogle-160-mpg-by-a-high
I guess I wouldn't have thought much about this except when I worked for the bank I had several individuals who worked in the auto industry confirm that indeed they have had the technology for many years to make the concern for gas and oil a thing of the past.