From number seven to number four, the Ford Explorer once again has an incentive offer attached to it this month. This offer, however, can't be combined with an APR under 5 percent. If you want to keep with the month's theme of "green," you've found the car for you. With $2,000 cash, you can help chip away at the $29,100 starting price. The interior of the Explorer has features made with recycled plastics, including the headrests and carpets, and it even has an available EcoBoost engine to further your green thumb.