It depends on what you use to get to your job and back. My dad can walk to work because it's a little less than a mile away, but doesn't want to walk. My mom's work is like two miles away so she takes a car too. My brother's job is right across the street from my mom's.
None of us need to use public transportation because we don't go to the city or need to use a bus for anything. Driving is cheapest for us because we all don't live too far from work.
I walk to work because my job is walking!
