Saw it again yesterday, being driven through St Kilda.
I was following the wife home as we'd just collected her 1979 Triumph Spitfire from Melbourne docks, she spotted the G4 first, stomped on the brakes to wave at me (I'd already seen it of course) and caused me to try and make her car anchor up sharpish. After 3 months in a container it wasn't all that keen to stop quickly but it just about managed it :P