The path from concept car to production vehicle is a long one. When Tesla delivered the first Cybertrucks to customers on Nov. 30 in Austin, it was almost exactly four years since the prototype debuted"-and a decade since Tesla founder Elon Musk had started talking publicly about making an electric pickup truck. Concept cars are visions of the future created by automakers to showcase design and technology they believe they can achieve one day. They hope that these design studies show so much promise, they'll capture the imagination of consumers and hold their interest while the automaker decides whether, and how, to produce them.