Undoubtedly the star of the show was the Freightliner concept truck “Revolution.” (exterior shown here, interior shown above) It is like those forward-looking concepts that make the auto shows so interesting. This one, though, is a heavy truck and a radical offering. Remarkably, it is a fully functioning vehicle, a tractor that starts, runs and drives down the road. It’s based on a Freightliner Cascadia, with the standard running gear, but featuring some under-the-skin innovations, like the Daimler/Detroit transmission and a self-sensing 6x2/6x4 drive.