In the past, I wondered whether electric-gasoline hybrid vehicles would ever gain critical mass. However, as a Christian Science Monitor article points out, the car companies expect to sell some 200,000 hybrid vehicles this year. This seems like critical mass.
It occurs to me that electric-gasoline hybrids are starting to make economic sense. The hybrid add-on costs some $3,000 for cars, trucks, and SUVs -- a 1,500 gallon break-even point at $2/gallon.
In addition, the Christian Science Monitor article talks of the move to "plug-in hybrids," which have a battery that you can use for relatively short trips. Plug in your car to the wall socket and the first 10 miles at 35 miles per hour is from your electrical grid rather than from gasoline.
Taken together, the move toward higher fuel efficiency and the move toward grid electrical power as opposed to gasoline seems to make economic sense. But there are other reasons to buy plug-in hybrids. I'm not much of a believer in the environmental benefits of the hybrids, but I can easily see the geopolitical benefits. Venezuela, the Middle East, and Russia are all potential hot spots.