If people are serious about using less gas and fewer resources then just drive something like this - the 2012 Mazda5 is a six passenger minivan that gets 28 miles per gallon on the highway. By the way, a near $40,000 Toyota Highlander Hybrid gets 28 miles per gallon in mixed highway/city driving. In the Mazda5, I was able to get 24 mpg in combined city and highway driving. The Mazda5 is comfortable, fun to drive and versatile - plus, it costs about $20,000. Maybe you don't need a hybrid or electric car.
It's a similar story with cars like the Ford Focus, Chevy Cruze, Honda Fit, Ford Fiesta and Kia Sportage.