An original, long-running participant of the luxury sport utility vehicle category, Land Rover has added refinements to all three 2007 model year products. The Range Rover receives a major interior refit for 2007 highlighted with available electronic enhancements. An electronic parking brake, improved climate control unit and driver's knee airbag is included on all 2007 versions of the Land Rover flagship as is a Terrain Response system. Ventilated front seats and an electronically controlled rear differential are now standard on the supercharged SC model. Debuting last year as a performance-themed interpretation of Land Rover's high-end sport utility vehicle, the smaller Range Rover Sport gains Bluetooth integration while the Supercharged model received Sirius satellite radio as standard equipment. For 2007, all Land Rover LR3 trim levels include leather seating and harmon/kardon audio system as part of the vehicle's standard features list.