Saw an article in an aviation magazine at work about the FAA aproving a "Palmpilot style" computer for the G-V.
The computer clipped to the yoke, and displayed enroute moving map and jeppesen approach charts. It interfaces with the onboard navigation when clipped to the yoke.
At the end of the flight you can unclip it and take it with you for preflight planning and other calculations. True paperless cockpit (no nav bag required)