Plug in your hybrid, pollute less?

Do cars that run on electricity pollute less than those that run on gas?

Generally, yes, but the answer depends on where you live, say experts. It also depends on the type of electric-powered hybrid you drive. Rising gasoline prices, combined with fears about global warming, have prompted sales of hybrid cars, which run on a combination of gas and electricity.

The current oil situation has also begun to create interest in so-called plug-in hybrids. These cars are similar to conventional hybrids but rely more on electricity and get charged through a wall socket. Right now, only a handful of plug-in hybrids exist, but some companies plan to offer conversion kits later this year. story continued