Spot on @woodford
. I think some on here are just a wee bit too keen to assume everything the government does is compromised for nefarious purposes, but that’s an argument for another thread and another day.
The distinction must be made between what is possible and what has actually been done.
We know that it is possible to produce an SG VLocity (taking the train as an entire unit, because we don’t have any evidence at this point that the bogie design itself is convertible.) However, we can safely assume that fitting SG bogies to a DMU is more akin to gauge converting a locomotive than a carriage set - that is to say, no matter how well the body design accounts for different possible gauges, there will have to be modifications to the interface with drive systems.
So even if the SG bogie design is indeed sitting around in a drawer in Derby or Dandenong, the point remains that it has to be refined, assessed, prototyped, assessed again, changes made, tooling adjusted, production models tested, and so on, all before you can attach the thing to a train, and long before you can actually take the train out to Albury to test it.
And there is Buckley’s that someone at Bombardier has done all this out of the goodness of their heart when back in 1999 there was no SG passenger service even being contemplated, much less one serviced by VLos.