The new Ford Fusion Hybrid is a mid to full size sedan that’s coming out in the first quarter of 2009. If you’re interested, you might want to check out this Ford Fusion Hybrid review in the LA Times. They got 52 miles per gallon in mixed city-highway driving.
Update: US News & World Report article has a bunch of links to more recent reviews of the Ford Fusion Hybrid. Below is an excerpt.
Ford Fusion
Ford Fusion
Ford Fusion
Ford Fusion
Ford Fusion