Wait a minute, viscous coupling AWD, 5% to front and up to 35% when needed? thats the exact same system as in the 996. There were rumors of a new active differentail AWD

Drag is up compared to the RWD but Cd is listed as greater on the C4 than on the C4S, that can't be right

They have lower acceleration and top speed than the RWD's according to the brochures. The C4S 0-60 is actually the same as the base 997.

One thing is for sure, the extra 44m in width mentined is sure not visible in the photos in the 997, I'm sure it will be in person though.