This is certainly a one of a kind thing. I do hope that the old wiring isn't going to cause more damage when you take it off, although at least ficus can pretty much survive anything but root rot. I like the shape and the base, the vein on the bottom of the truck is cool. I would get my toothbrush out and get that cleaned up a bit. I think I'd also make sure the wire isn't cutting in anywhere, and get it off soon.
Neat tree.