It seems that they removed the breakdown lane from the freeway! So if you're in a car or truck, whatever you do, don't get a flat or break down.
As you can see from the map, instead it was a long windy route along the 'M2 cycle detour', then a short stint on the MS to Winsor road, and then a similarly circuitous trip around the construction works on the Paramatta river.
Still, a fun, and not too painful 60km, though with the stopping, and traffic hazards, at an average of 21km/h. Not quite what I had in mind.
In the little loop at Camellia, I ventured along a signed Bicycle path that just stops in a cyclone fence - I don't know why, but the cycle path going beside the Rheem factory there is fenced off, with the only signed of life being a rather nasty group of magpies, that too turns in swooping on me. (I've got some video footage of a peewee trying to drive one of them off for me
)