Well, a weekend for me might involve driving 150-200 miles to the middle of nowhere (literally) walking or skiing and then driving back - with very few filling stations for most of that distance and then most of them being small rural businesses that close early (especially on a Sunday).

[NB I walk to work, my wife walks to work and my son walks to school - we even do a lot of our shopping by walking - I wouldn't pretend our car usage patterns are typical].