Entering its fourth year of availability in the North American market, the 2012 Nissan GT-R has a new look, new colors, new wheel design and, most important to fans of pure power, more horsepower under the hood. In addition, a new "Black Edition"- with unique seats, interior colors and wheels - joins the GT-R Premium model. The latest iteration of Nissan's legendary supercar makes its North American debut that the 2010 Los Angeles Auto Show and...