Do you ever think about where your favorite hamburger comes from? Yes, we know you know it comes from a cow, but do you ever go further up the production chain? As in all the way to the ritual bovine bumping of the uglies? Chevrolet did when crafting a commercial to tout its latest Silverado HD pickup. And the musical cut Chevy’s ad agency chose for this cross-country beefsteak booty call? Perfecto (if mildly predictable).