The 2009 SLK Mercedes-Benz models will make their U.S. showroom debut in April 2008. MBUSA Press Release/Montvale, NJ: The latest generation of the SLK blazes a trail of new sporty highlights, and bestows yet greater appeal on this two-seater sports car with its trendsetting vario-roof, that transforms it from roadster to weatherproof coupe in a...