At the time of this writing, there are about 30 new cars currently sold in America that offer a traditional, three-pedal manual transmission. Such vehicles range from sports cars like the Porsche 911 to econoboxes like the Mitsubishi Mirage. Each year, it seems, the roster gets a little smaller. Jaguar, a company that expressed a lot of excitement about offering a manual on its F-Type a few years after the debut of that model, reverted to only automatics for the sports car.
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Gated shifters were originally used to ensure driver's don't pick the wrong gear. I assume it became a snooty sports car fashion thing shortly thereafter, since people still love the look. Missing gears never seemed to be a problem with the few Ferraris and Lambos from the 1980s and up that I have experienced, but this could be a very necessary design feature in 40+ year old transmissions?