When a little California upstart named Tesla Motors released a limited-production, electric sports car in 2008, nobody could have predicted that the same company would someday be the most valuable carmaker in the world and be credited with sparking the electric-vehicle revolution. Now Tesla's earliest cars are becoming hot collectibles, skyrocketing in price in recent years as Elon Musk's empire has exploded. That's thanks to the "star power of the Tesla brand" and the significance of the Roadster to electric-car history. Tesla only made around 2,450 Roadsters from 2008-2012. Read more at the link in our bio. Story by Tim Levin. (Credit: Getty; Bring a Trailer)