The car followed the twists and turns of the mountain road.
closed as general reference by FumbleFingers, MετάEd, RegDwigнt♦ Feb 5 at 21:18
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It's literal - if you can picture a mountain road, it usually snakes up the mountain with sharp turns and from a distance, looks like a twisting ribbon on the side of the mountain. (thanks @ElendilTheTall!)