[deong]

The closest thing I can imagine to what he wants is something like a "t+15 years" version of the Motorola WebTop (and many other similar ideas). You carry a powerful processor with you and either use it "bare" or connect it to a standardized interface setup. You'll never get enough of those kiosks to completely get to what you described, but when your phone can be a perfectly capable standalone device as well, that becomes less important. You have the "docks" at home, work, and a few popular public places like airports, coffee shops, etc.

The idea of something like these dockable phones is almost certainly going to be a big part of where the industry is headed. It's just too obvious not to be. But it requires advances in both ubiquitous broadband availability and power and battery life available to mobile devices, so it's just not feasible right now.