Being a big fan of AirBNB, Hipmunk, and GoPexo, I think this concept is really exciting.
Unfortunately, I also think that it'll probably remain a concept for at least the next five years.
One of the biggest PITAs with travel is getting accurate and comprehensive flight and ticket information; with the exception of airlines running on Google's ITA, I believe most airlines are running on systems built with Fortran (and thus are difficult to interface with). While companies like Kayak are making this information more accessible, I would be really surprised if a real-world airline managed to build anything remotely like this any time soon.
Unfortunately, I also think that it'll probably remain a concept for at least the next five years.
One of the biggest PITAs with travel is getting accurate and comprehensive flight and ticket information; with the exception of airlines running on Google's ITA, I believe most airlines are running on systems built with Fortran (and thus are difficult to interface with). While companies like Kayak are making this information more accessible, I would be really surprised if a real-world airline managed to build anything remotely like this any time soon.