Back in September, we were lucky enough to catch a glimpse of the Concept One -- the first electric supercar from Croatia's Rimac Automobili. Boasting a full 1,088 horsepower and capable of going from 0-62MPH in just 2.8 seconds, the Concept One is still very much a concept, but today, we've got video proof that it actually works. Spotted by an eagle-eyed tipster, the 70-second clip is