Not being a techie I don't know how viable it would be to put together for compatibility with all the plug in, after market and factory fit units that ae available, but what an excellent idea in principle.
The Clubs are in the perfect position to influence programmers with suitable towing routes, scenic routes and of course they have access to the locations of all Club sites & CL's etc, which means all the directions held in the Clubs sites books could be programmed in.