Nissan Lover 
2010 Nissan Altima Hybrid Sedan 4dr Sedan (2.5L 4cyl gas/electric hybrid CVT)
Well worth it
 I got a fully loaded version about a mopnth ago.  Gas mileage so far is 33.6 MPG, consistent with what they publish.  Having the gas engine cut out at low MPH takes some getting used to but the car still has good acceleration (consider it has more HP than the V4 Altima).  Also is a very comfortable ride and looks sharp.  Not only is it better for the environment, but the cash rebate makes it comparable in $ to a similarly equipped V4 and with the tax credit of $2,350 and the better fuel efficiency, this seems like a much better deal.