atakacs,
That was our original planning, but the task has grown now to significantly larger. Even so, long range cruise of the G650 is Mach 0.85 and that is with 8 pax only. Plus I don't believe the G650 could do Brisbane-New York (It could do LA but that is an extra stop and thus an extra 90 mins or so on the ground all things going well for the turnaround).
Heathrow Harry, We will not have to deal with US immigration.
canberra,
Maybe it would be and I might yet have to go there! I was hoping that some "professional pilots" who have flown these aircraft may be able to chime in.
Cheers
CB