Saab Aero-X is a concept car built by Saab unveiled at the 2006 Salon International de l'Auto. It is powered by a 2.8 L twin-turbocharged V6 running on pure ethanol that produces 298 kW (400 hp). 0 to 100 km/h (62 mph) is predicted to be 4.9 s and top speed is 255 km/h (158 mph). It has a 7-speed manual transmission controlled by paddles on the steering wheel. Like the later Saab Turbo X, the Aero-X has four wheel drive. The doors and windscreen are connected, so instead of using conventional doors or even gullwing doors, it uses a cockpit canopy where the entire top section of the car is opened.