The RX 400h combines a regular 3.3-liter V6 gasoline engine with a pair of high-torque electric drive motor-generators, one driving the front wheels and another driving the rear wheels. It comes standard with electric all-wheel drive and still offers the same 3,500-pound towing capacity as the RX 330. Although it is a complex vehicle, it is very easy to drive. There is no manual recharging and no plug-in cords to remember. It also follows the tradition of Lexus reliability with a warrantee on the hybrid drivetrain for 8 years or 100,000 miles. Amenities include a dual-zone climate control, GPS navigation, power seats, power windows, a power liftgate, rear-seat DVD, and a megawatt audio system by Mark Levinson.For 2006, changes are minimal.