The elusive Batwing has been seen in action as it hovers back and forth underneath the 6th Street Bridge in downtown Los Angeles.
This video from YouTube was captured on a night shoot on 11 September 2011.
From this clip it looks as if the vehicle will use the same kind of thrust as a Harrier Jump Jet to power itself into the air and then speed away.
That's all theory based on this footage - which is obscured by the bridge supports – and when the rig is digitally taken out it could just be that this is the Batwing passing beneath the bridge as it flies through.
The Dark Knight Rises opens on 20 July 2012.