Yet oddly, we don't bat an eye that the former feeds the latter:
Keep this in mind when highway builders or politicians trot out the fear tactic of the congestion bogeyman.
*Data from Tod Litman of VTPI. I simply rearranged it to pile up all of the related costs necessitated by our current supply-side road building policies. I'm even being generous and not included Roadway Construction Costs or Traffic Services in the sum, suggesting they are basic infrastructural costs of doing business for cities as facilitators of social and economic exchange. Though, I do suspect that they'd be significantly lower per capita with halfway decent policy.