I second the ball peen hammer suggetion.
Reynolds Number
If the dimples are correctly sized for a golf ball, logically, either bigger or smaller dimples would work on a car. I wonder which it is.
Rather than dimples, I'm more currious about faceted panels, like the F-117 jet pane. Here is a body based on a 6v octahedral-symmetry sphere. Obviously it is more aerodynamic than the prolated octahedron it is based on. One could test 2v and 4v versions as well to see if there is a drag minima at less than a smooth compound curved surface.
