I noticed tonight cache.l.google.com seems to go to Aussie, then back over to the USA, 460ms later.

edit: spoke to soon, I see it goes to a Snap subnet the fourth time around. Must be DNS or route change coincidence at time of a quick trace route. I have a habit of using that when doing a trace. It orginally went through peer-google.snap.net.nz which looks like Aussie, then later it went to the US (22 hops total exclucding my own local routers).

The curious,
Cheers,
Gavin.