Drivers also supply positive externalities by engaging in commerce with associated consumer surplus. No one is driving into Manhattan for the thrill of it.
So goes the argument of every roadside downtown strip who complain about the removal of their curbside parking.
The reality in many cases is that walkers make up a substantial, if not majority of the business in these places (referring to denser town areas with parallel curbside parking rather than suburban strips with normal parking or actual parking lots)
