Pinstripping is alive and well in the Kustom motorcycle circles (particularly bobbers, choppers, and baggers)... there's just been a noticeable slow fade from the automotive world, staying in lockstep with the frequency of everyday sighting of 30-50's cars as these collectibles are continuing their fight for preservation from the outdoor elements. The problem, in my opinion, is one of applicable aesthetics. In the 60-70's +, automotive design changed: more planar surfaces and standardized dimensions that unified car bodies into more cohesive forms. A good pinstripe over the headlight of a 40's ford is like a necklace draped down a busty chest. But a pin stripe floret on the trunk of a 70's Pontiac-brick is more aesthetically akin to a tramp stamp hovering above some flat'n flabby. Pinstriping is at it's best when it can accentuate a form and shape, 3-dimensional visual interest and visual tension between components which more moderns cars lack in comparison, with the sole exception of more exotic variants of coarse.