Intermodal Urban Traction ~ Monday, October 19, 2009
Here's an interesting prototype: The transit system of Stuttgart (a quite hilly city) includes a cog railway, the Degerloch Zahnradbahn, which has a special open-air bike-rack trailer car.
More information on this Stuttgart Transit site in German, and in English in this Cyclelicio.us Blog post where I found out about this.
Gold Medal Models makes some photo-etched N-Scale bicycles. Hmm!