There are two trim levels available on the 2007 Lincoln Navigator: base and Ultimate. The base model comes standard with keyless entry, power-adjustable pedals, windows and locks, and power folding and heated outside mirrors. It also includes essentials such as reverse sensing, a universal garage door opener, dual automatic climate control, a six-CD changer, leather upholstery and a 10-way power front seat adjustment. Of course, there are airbags aplenty for front and side-impact. The Ultimate trim adds a power liftgate, moonroof and folding third-row seats, an additional overhead console, and heated and cooled front seats. Standalone options include power running boards, satellite navigation and Sirius satellite radio, a DVD system for the rears seats, a towing package and, naturally, 20-inch wheels.