8,000 miles per year is about half the average annual miles per year driven by people ages 20-54, at least in the US: http://www.fhwa.dot.gov/ohim/onh00/bar8.h

8,000 miles per year is about half the average annual miles per year driven by people ages 20-54, at least in the US: http://www.fhwa.dot.gov/ohim/onh00/bar8.htm http://www.fhwa.dot.gov/ohim/onh00/bar8.htm