Melbourne hosts the Formula 1 GP each year.

I don't go, but I do enjoy the special tram movements that get the
petrol heads to and from the races.
See:
http://www.yarratrams.com.au/using-trams/service-changes/service-changes/2014/grand-prix-thursday-13-to-sunday-16-march/

OR
http://tinyurl.com/p36td2e
.... while it lasts.

Here's one slightly unusual example.

The Melbourne restaurant trams can't pick up from their usual location
while the "GP express" is running, so they move into a little used
terminus in the CBD.

Here's this morning's pic of the restaurant fleet and a normal service car.
http://tdu.to/938-122_PeelSt_16March2014.JPG

Mal Rowe - in a city with Formula 1 tram drivers