By one estimate, the average American spends 1,600 hours a year either
driving or earning the money to support a car, and drives an average of
6,000 miles a year. That works out to about 4 miles traveled per hour
spent -- the equivalent of a normal walking pace. 

   - Edward Tenner 
author of the new book "Why Things Bite Back" -- 
a compilation of technology's often opposite-than-intended outcomes.