While the long-discontinued, Lotus-based Tesla Roadster first put the Tesla brand on the map back in the late 2000s, it was the subsequent Model S sedan and Model X SUV that truly transformed the electric car maker from a niche startup into the major player that it is today. And now, nearly 14 years after the first Model S was delivered, Tesla CEO Elon Musk has announced that the company will soon be ending production of both the Model S and Model X to reallocate production capacity toward the company's new Optimus robots. This decision probably doesn't come as a surprise to anyone who has been following Tesla's by-model sales figures, which have been dominated by the Model 3 and Model Y in recent years. But what will this mean for the values of the Model S and Model X on the used market? Or will their discontinuation boost demand and, at some point, even elevate the Model S and Model X into desirable modern classics for a new generation of enthusiasts?