May be off target a bit, but what about the concept bike that Colnago did? I haven't found much on it but I do remember seeing something about this being used, about 3/4 down the page:

This is the first product of the Colnago/Ferrari partnership was the Concept bike in 1987. Standout features include the hydraulic brakes and single Ferrari inspired downtube shifter that operated the internal gears located in the chainrings. The trussed chainstay and internal geared “desmodromic” chainrings were pretty advanced at the time. Mr Colnago said that it was Enzo Ferrari who said he should build a carbon tri-spoke wheel.

Road Bike Action | First Look: Colnago Ferrari CF8