It will be interesting to see how the 300h's E-Four Wheel Drive compares to the 200t's mechanical based system.
http://blog.lexus.co.uk/2014/09/new...rip-with-e-four-all-wheel-drive/#.VBh6AfnRPVICalled E-Four, the system uses an additional electric motor to drive the rear axle, providing more grip and better vehicle control on slippery surfaces. The front axle is propelled by power from the hybrid petrol engine or electric motor, or both in combination.
E-Four works intelligently, varying the amount of drive torque to the rear wheels in line with driving dynamics and road conditions, to secure just the right level of stability when pulling away or accelerating in low-grip conditions. As operation is automatic, the driver doesn’t have to think about engaging AWD.