Flying Kars?
Sorry, guys, but despite the froth and spittle, this is really just about upgrading the avionics systems envolved in General Aviation. Anyone who has flown or ridden in a small, single engined GA aircraft can appreciate that the current collection of 'steam gauges' that comprise today's flight instrument package is hopelessly antique and overcomplicated. That is perhaps the real constraint on more widespread private pilot aviation. Trying to manage the various readings/indications on the instrument panel whilst just incidentally maneuvering a vehicle in three dimensions in intimidating, to say the least.
Flying the Box, or Flying the Pipe, offers a new paradigm for integrating flight control info that is much more straightforward and, ultimately, safer. Back when this was a more active research project headed by NASA, it enjoyed wide support from the various segments of the aviation industry...including instrument manufacturers and aircraft producers. The FAA/NASA were talking about a new and seperate licensing program to certify pilots with this new equipment, so that they would only be able to fly this type of aircraft.
Suggesting that this form of instrumentation would immediately result in a mass Chav assault from the air is pretty silly. The problems resolving around traffic congestion could easily be the long pole in the tent...that, and the huge investment in the supporting hardware necessary to manage the airspace...