Prior to the 2008 SEMA Auto Show, Mercedes-Benz launched the Tuner Challenger a competition for tuning firms to show their skills with the?Mercedes-Benz GLK-Class compact SUV.Four interpretations are being shown including the RENNtech GLK Pikes Peak Rally Racer, BRABUS Widestar, Boulevard Customs GLK Urban Whip and Legendary Motorcar Companys GLK Rock Crawler. The base vehicle for Boulevard Customs, Legendary Motorcar and RENNtech is the GLK350 with a 272 3.5L V6 engine that well see in the U.S. BRABUS took a different route focusing on the diesel GLK 320 CDI 4MATIC. A diesel version of the GLK for the U.S. is currently under consideration.Mercedes-Benz has put together a voting program for the show goers at SEMA and will also show the concepts at the 2008 LA Auto Show where visitors will be able to vote again. If you cant make it out to either show Mercedes-Benz is also running a poll at www.mbusa.com. The winner of the “Tuner Challenge” will be announced on Dec. 2nd.Follow the jump for the high-res image gallery.2010 Mercedes-Benz GLK Interpretations at SEMA 2008:????Tags: 2008 SEMA, , 2010 Mercedes-Benz GLK, , GLK-Class, , SEMA