Mercedes-Benz unveiled its Intelligent Aerodynamic Automobile concept car at CES in Las Vegas. The vehicle has two modes it can transform between. The functional form works as a luxury car with all of the features you would expect from a Benz. When the car accelerates to over 50 mph, it transforms by widening the bumper, filling in the wheel rims, and extending the rear. This turns the IAA into an aerodynamic version of itself, saving on fuel consumption and reaching top speeds of 150 mph.
Source: Tech Insider