And ass, there's ass too.
Some of us see the desert as nothing more than a place to get lost and eventually die of thirst, but the off-road racers sponsored by Monster Energy look at the dunes and see a giant playground. So Monster has made a video of these racers, who use both dirt bikes and modified trucks, tearing around in the sand jumping huge distances. There are also some scantily clad women whose role isn't altogether clear, but we don't especially care about the why of it.
There isn't really much of a why to any part of this video, to be honest, but that's still just fine. It looks cool, so there's a video of it, that's all the reason we need.