This is from 2002
http://www.commondreams.org/headlines02/1030-03.htm
"Americans' penchant for large, gas-guzzling sport utility vehicles is largely responsible for a steady decline in fuel efficiency since 1988. Light trucks including SUVs, whose average fuel efficiency was 17.3 mpg last year, now account for about half of the new vehicles sold in the United States."
"Right now people are valuing other attributes -- things like towing ability, seating capacity and cargo space -- higher than fuel economy," Steed said. "That's because the price of gasoline is pretty cheap at this point." (Remember from 2002)
The EPA has estimated that a driver can save $1,500 over five years by switching to a car that gets 30 mpg from a 20 mpg model. That's assuming a cost of $1.50 per gallon of gas and 15,000 miles driven each year.(Figure at $3.00 per gallon)