As a rule, electric car concepts embrace the future. Even those with a retro flavor are clearly products of the 21st century. Don't tell that to Infiniti, however -- it's going deep into the past. Nissan's luxury badge has unveiled the Prototype 9, an EV whose design unabashedly recalls 1940s race cars (particularly those from Auto Union). And it's not just the long nose, spoked wheels and massive front grille that pay homage -- the prototype was even built using traditional techniques. Inside, of course, it's very much the product of 2017 know-how.