Mercedes-Benz sees no reason its SLS AMG Roadster can't be enjoyed by women as well as men. So to emphasize the point, the German automaker gave a few girls the chance to take the supercar for a spin around the track. The Mercedes-Benz SLS AMG Roadster is one powerful open-top ride, packing a 563-horsepower 6.3-liter V8 to sprint off the line to 60 mph in a blistering 3.7 seconds.