SkyCab Project green transportation system.

This is a good idea; almost utopian and perhaps very futuristic and something that you'd see from a Jetsons cartoon show. Environmentally-friendly: yes, but is it viable, economical, and feasible?
Many cities are already facing problems with operating and maintaining public transport systems. Some cities can't even get their price mechanisms right. The commuter suffers.
To install and implement a system like the Skycab, a huge investment needs to be made for infrastructure, then another huge cost component must be factored for operations and maintenance.
Unless a big investor comes into the scene, it is very difficult to maintain this system with only a ridership of 9000 per hour.
What are your thoughts?