Per DOT, we average 29 miles per day:
http://www.rita.dot.gov/bts/sites/rita.dot.gov.bts/files/subject_areas/national_household_travel_survey/daily_travel.html
I imagine there is a statistical curve on the site somewhere.
http://www.rita.dot.gov/bts/sites/rita.dot.gov.bts/files/subject_areas/national_household_travel_survey/daily_travel.html
I imagine there is a statistical curve on the site somewhere.