When you have nothing but open, largely barren desert and cars, you make fun where you can.
The new thing in Saudi Arabia is to video your car rolling along of its own accord while you do any manner of thing you want on the hood, roof, back or being dragged behind it.
You also need to have this song playing, which Google probably incorrectly translates as Yesterday, My Heart Carefree.
You don't even have to have a car, per se.
Here's my favorite:
This isn't the first car-based meme that has come out of Saudi Arabia. Last year, doing insane things while balanced on two tires was all the rage.