Just two years after its highly successful introduction, the Infiniti M receives major upgrades for 2008 that include the first-ever availability of Infiniti's intelligent ATTESA(TM) E-TS all-wheel drive system on the 4.5-liter V8-powered M45. The new model, designated M45x, joins the M35x to provide buyers with two choices in all-climate AWD performance. Other enhancements for 2008 include revised interior and exterior styling and added luxury amenities and technologies, including the production debut of Infiniti's newest safety...