As I was responsible for it's last annual I can say that the intent from the outset was to see it operating again but after inspection of critical parts and subsequent pricing to replace those parts (about 70k at last count) 20k for each slew gear bearing, the decision was made by management not to continue with the work, an obvious sign (hindsight) of what was to come.
If it was trailer mounted I dont think the fully assembled weight minus the cars would be too much for road transport, it would require the trailer too be a low loader type with additions like outriggers to stabilise at setup. Then a second truck for all the cars, platforms and associated equipment.