Challenge: The roads aren't free - environmental costs ... 
Clifford Cobb article about the external costs of automobiles. These costs aren't covered by drivers, but the public at large
>30 days ago by justindula, 1 User, more info saveautomobile+subsidies+traffic
Challenge: The roads aren't free - environmental costs ...
Beyond Gas Taxes: Linking Driving Fees to Externalities
An article about the true cost of driving and how to link what people pay to the true costs
>30 days ago by justindula, 1 User, more info save