Saturday, June 21, 2008
The MPG illusion
An interesting study from the latest issue of Science about people's illusion on fuel efficiency.
The actual relationship between gallons of gas used per 10,000 miles driven as a function of fuel efficiency of car (expressed in MPG) (left figure) is curvilinear. A false belief of the relationship being linear makes people overpay for high MPG cars and undervalue low MPG cars (right figure).
Update: This non-linear relationship explains why "Buy an SIV, Save the planet"