Additional bit of info: The C5's drag coefficient is 0.29 and the 928 GTS's drag coefficient is 0.36 (lower is better). However the Porsche has something up its sleeve which may turn the tides!
Additional bit of info: The C5's drag coefficient is 0.29 and the 928 GTS's drag coefficient is 0.36 (lower is better). However the Porsche has something up its sleeve which may turn the tides!