Mercedes-Benz will unveil its newest model, the GLA, at the 2013 Frankfurt auto show. Mercedes-Benz calls the car a compact SUV, but its dimensions, especially its under-5-foot height, suggest wagon. The GLA will be Mercedes-Benz's first front-wheel-drive SUV in the U.S., but will also be offered in all-wheel drive. The car will hit showrooms in late 2014 as a 2015 model year.