 SH-AWD combined both the automatic all-wheel drive VTM-4 system capability with the "super handling" torque shifting ability of ATTS on the rear axles.In the North American market, Honda introduced the original SH-AWD system in late 2004 with the second generation 2005 Acura RL.Two other SH-AWD variants were introduced in late 2006 in the then all new 2007 Acura RDX and the new second generation 2007 Acura MDX Sport Utility Vehicles SUV.