Buff it all down
After all of the residue has been removed, your car will look terrific. You can make it look even more terrific by taking yet another clean, dry terry cloth and rubbing the surface with a firm hand, using that same overlapping, circular movement. Buff the whole car however you please--no need to do one section at a time. Buffing the car ensures that any residue has been completely removed, and that the surface is as shiny as possible, smooth and slick to the touch.
Finally, take a few steps back and take in the glorious vision of your reborn automobile.