Available as a coupe or convertible, the rear-wheel drive 650i boasts a 360-hp 4.8-liter V8 engine, mated to a six-speed Sport automatic transmission with steering wheel shift paddles; a six-speed manual transmission is optional. The 650i is equipped with a multitude of progressive technologies, including a sport-tuned suspension with Active Roll Stabilization, 18-inch run-flat tires, adaptive brakelights, Park Distance Control and adaptive bi-xenon headlights. Inside its lush cabin, the 650i provides seating for four, with high-quality leather upholstery, dual-zone automatic climate control and aluminum trim. A voice-activated navigation system and Bluetooth wireless connectivity are also standard. Standard safety features include anti-lock brakes, electronic stability and traction control, active anti-whiplash front head restraints and up to eight airbags, while more advanced technologies such as a lane-departure warning system and night vision are optional. The BMW 650i carries over with minimal changes for 2010. Both the coupe and convertible are now outfitted with digital HD Radio, while the next-generation iDrive system includes a new internal hard drive-based navigation unit.