This is the 2020 Mercedes E63S Wagon. It is the stealthiest of sleepers, for that matter it’s probably the most powerful of sleepers with what we’ve done to her. At first glance you see an E-class wagon for grocery getting and soccer practice, but underneath is a 770+ horsepower behemoth! However, it didn’t start life this way. Let us take you through the process of creating such a good-looking beast.