melbourne transit in Maryland

[paulg@alphalink.com.au (Paul Gilchrist)]

In a TV commercial for Bell Atlantic Mobile, here 
on the East Coast of the US, amidst a plethora of 
other urban scenes we see a Z1 tram and a Hitachi 
motor car, numbered M211 if my slomo is 
sufficiently clear. Does this seem like a valid numbering?

The ad was probably filmed in Melbourne, where it 
is cheaper than the US, tho clearly the impression 
to be given is that it is stateside, i.e. the only 
car we clearly see is a LH drive convertible. 

The platform scene shows a sign labelled Track 5, 
which seems a more American term than our "Platform". Is this how
stations in Melbourne are signed?