"maybe in 50 years someone will get that to work."
Prolly, but much above 100k could rip the control surface out by the roots.
NASA is currently working on adaptive wings to eliminate control surfaces entirely (hollywood should have left them off this mockup, too). This would solve the "Flaps becoming slats" problem.
The real problem is shown in the Pictures. What Would normally be a massive titanium structure where the Wing root would attach to the fuselage is completely nonexistant. The Swept wing pictures shows NO wing root attachments to withstand torsional loads when the wings are extended. Just a rotation point near the leading edge.
It would have been cool if they had incorporated something, because it looks like the rear stablilarors fold down to become the trailing edge of the swept wing and the wing root mount could have locked these together, also.