Wendell Cox, writing at newgeography.com, notes that the new MIEV plug-in electric electric car expected to be be on the market from Mitsubishi Motors in two years beats mass transit on greenhouse gas emissioins.
"The average GHG reduction compared to the current US automobile and sport utility vehicle fleet average would be 83 percent. The car would emit approximately less than one-half the GHGs per passenger mile as transit in New York area (the best in the nation) and one-fourth the overall US transit average."
The downside? It can only travel 100 miles between charges. Still, the new car is an illustration of how quickly technology can move to address green house gas concerns.