So yesterday, I was pretty confident I'd found my favorite entry into the GLK Tuner Challenge. I mean, a Benz designed to be skated on? That's just too much. But after checking out the competition, I'm going to have to revise that decision. As Captain Bacon said, race cars are always cooler than show cars, so I'm going to have to cast my vote for RennTech's Rally Racer. I love the widebody, matte paint, and utilitarian interior, and I also like the fact that, as Jen says, it could "get driv." Seriously. But that doesn't mean the versions from Boulevard Customs and Barbus aren't sick. Unfortunately, the Boulevard Customs version was parked outside, and between its white paint and the bright Vegas sun, I couldn't get a decent shot, so I had to use a press pic. Check out photos of all the entries after the jump, and head over to the official Mercedes-Benz site for all the details and info on how to vote for your favorite.