This week, our most popular video is the hard-to-pigeonhole 2011 Mercedes-Benz R350. Is it an SUV, a minivan or a crossover? That doesn’t matter as much as the generous backseat and the Benz’s admirable gas mileage with the optional diesel powertrain. Still, all those attractive qualities come at a steep cost. Is it still worth getting? Watch the video to find out, and check out our other top videos below.