Lincoln redesigned its full-size luxury SUV for 2007, revamping the grille and sprucing up interior. For 2008, made some optional features standard, including a power liftgate, power-folding third-row seats, 14-speaker audio system with satellite radio. A rearview camera is new option. The Navigator's competitors include Cadillac Escalade Infiniti QX56. longer-wheelbase model, Navigator L, joined lineup 2007.