It was already smart: Its voice-activated navigation system provides real-time traffic information, including road closures, construction, accident data, and directions with just a business phone number, as well as Bluetooth technology that can link with your cell phone. But the Lexus LS 600 Hybrid ’08 is also high performing and efficient. The engine features direct fuel injection that improves mileage and boosts overall power. Its electric-drive motor pushes 0 to 60 in 5.5 seconds—all of which can be checked by the Energy Monitor, which allows drivers to see how efficiently the vehicle runs. Base price: $104,000.