I didn't even know there were 100 green cars on the market!

The Hondo Civic Hybrid has been ranked the greenest car on the market by yahoo. See yahoo's 100 greenest cars.

Also of interest, Toyota and Ford are developing gas/electric hybrids currently called plug-in hybrid electric vehicles, or PHEVs. Supposedly 100 mpg PHEVs are within reach in the next few years. See the full article here.