ya its impossible for the current platform, but as far as the new model version thats coming out, that may happen, but its not here yet
Sigma platform, which the Camaro, CTS, (new GTO) will all use it. As well as the mid sized Crossovers (thats where the AWD comes from).
theres ideas of an AWD CTS, but getting it to work with the Sigma-Lite platform is not in the cards at the present time. But who knows