where exactly was your car parked?
it's probably your own fault for opening your mouth
- if you had not of spoken to him, he wouldn't have known whether a full license or probational driver was driving, and would not have been able to issue a ticket.
from the "your rights - police powers in victoria" book:
Private property
The police usually need a search warrant to enter and search private property – for example, your home. However, the police may go into private property without a search warrant when:
• you let them in
• they have a reasonable belief that a serious offence will be or has been committed and they need to go into the house to arrest someone
• they need to stop a ‘breach of the peace’ – for example, a fight
• there has been a breach of an intervention order
• they are chasing someone who has escaped from prison or police custody
• they have a warrant to arrest someone
• they have a reasonable belief that illegal drugs are on the property.
so from what i understand - if your car was in a locked/restricted work carpark - you could ask nicely for them to bugger off...
although at the same time, the officer in question could just as nicely send you out a letter to present your car for a full roadworthy inspection at the cop shop
edit: just realised those conditions apply to searches
- will do some more reading and report back
2nd edit: it seems that once you are off the road, and your car is on private property - it would count as a 'search' of that private property to go have a look at the car. - which they are not allowed to do (pending reasons above).
If the door/gate is open, though - they won't seek an invitation and will look at the car unless you ask them to leave.
there's some interesting reading about breath testing AFTER you have driven a car - and further interesting reading at:
Road Rules Victoria. Your legal rights and obligations