Mercedes-Benz has unveiled the F-CELL Roadster project. The F-CELL Roadster is controlled with drive-by-wire technology, and a joystick takes the place of a conventional steering wheel. The vehicle is powered by a 1.2 kW emission-free fuel cell system located at the rear. It could reach a top speed of 25 km/h and achieve an operating range of up to 350 km(217 mile)."The F-CELL Roadster uniquely combines state-of-the-art technologies with the history of vehicle construction. As an allusion to the Benz Patent Motor Car from 1886, the vehicle is fitted with large spoked wheels.Moreover, the F-CELL Roadster incorporates stylistic elements from diverse eras of automotive history, such as the carbon-fiber bucket seats with hand-stitched leather covers and the distinctively styled fiberglass front section, based on the component from the Formula One racing bolides."