This sounds interesting:
http://www.worldcarfans.com/9090217....buts-in-geneva
I wonder if it's essentially the upgraded software from the new 7-series being offered as an 'upgrade'? It does speak of "an additional radiator outside of the engine itself as well as appropriate air flow ducts and a high-performance fan on the main radiator serving to adjust the engine to the change in thermal conditions.".
Hmm. Sounds hot.
