The wagon... It's fallen out of favor over the course of the last few decades thanks to the rise in popularity of sport and crossover utility vehicles. That's a shame, because the wagon is the TRUE sport utility vehicle in the market.
Case in point is this 2015 Mercedes-Benz E350 wagon. It's powered by a 302-horsepower V6 engine, has seating for up to seven people, or it can be used to haul a whole lot of stuff. This longroof drives in a manner that's far more enjoyable than any SUV or CUV counterpart, and it looks better as well.
Only a handful of automakers are still cranking out wagons... which means only a handful of automakers still get it. Long live the longroof!