A hoverbike model with a life-maquette/sculpture of Hamill/Skywalker of unknown material. Don't know why it was built or for which scenes.
Appears I tried to shoot with flash at Hamill-under-glass, with predictable effect. Still, for the reflection and circular pattern, it does suggest movement appropriate to the figure.
I don't know about the faint reflected or blurred figure on right. I don't remember being that tall or large. It could be someone else, or another life-sculpture in the background.