cdroms are slow, don't allow to modify their content easily, they are weak and not as easy to carry as USB keys.

It would be great to provide Ubuntu as a liveUSB just as Mandriva does. We should be able to carry our distribution on any computer, manage our preferred settings (do I want binary drivers enabled ? what is my preferred resolution ?), etc.

The thing is not to make something transportable, but really a nomad system that could be used just the best way as it could on any computer.