Even if we all drove superefficient Revolutionary+ vehicles, our transportation system would still suffer from serious congestion, highway accidents, and infrastructure shortages. One way to combat all three problems is to change how we charge and pay for driving’s infrastructure costs. Well-designed pricing mechanisms can achieve the balancing act of decongesting roadways, reducing net VMT, and discouraging driving during peak hours. VMT taxes charge driving per mile, not per gallon. Congestion pricing manages traffic flow by charging more for trips when roads are crowded. Privacy can also be protected: Oregon's VMT-tax pilot program installed GPS units that ensured total privacy and did not track routes or locations. Compared to a control group, Oregon drivers charged a premium for peak miles and less for non-peak drove 33% fewer onpeak and 15% fewer total miles.
Inrix. 2008. INRIX National Traffic Scorecard: The Impact of Fuel Prices on Consumer Behavior and Traffic Congestion. Inrix. link