What's wrong with this picture

I'm stuck in (rainy) traffic
driving into the CBD
and I'm making words out of the guy in front of me's numberplate
ROBO TV
W ROBERT 5
and its been a good 10 minutes I've behind this fella before I realize
that's a UK numberplate!  what are you doing in Melbourne?!
I wonder how long you can drive around before you have to change your plates?