Yeah, I had a read of the PDS, they have about $3bn in bank debt so a wind up wouldn't work. Set against "non-tangible" assets of the future toll revenue...
It's the typical Macquarie Model mess, you actually buy units in a trust, rather than a standard company structure.
I don't know enough about how trusts work, but perhaps you could have a $2 company buy the units? Then have the company vote you on as a director, and give yourself some fees?
Later when the instalments come due, the $2 company will be insolvent, and Mac will cough up the dough. But they're the smartest guys in the room, I'm sure they've covered their a**es on every possible scenario.