There are others who are more knowledgeable than i, but the law is pretty clear on the issue.
Law RTA 1988 sects 45, 47, 49 & 53]
Insurance. To use a motor vehicle on the road, you MUST have a valid insurance policy. This MUST at least cover you for injury or damage to a third party while using that motor vehicle. Before driving any motor vehicle, make sure that it has this cover for your use or that your own insurance provides adequate cover.
Note that it says "before driving any motor vehicle". To me, the implicit meaning of using the word "before" being that even before the vehicle is driven, it must have insurance.
The other thing to note, is the use of the phrase " to use a motor vehicle". This was deliberately included instead of the word "drive", to give the widest possible definition. So you don't have to have driven the vehicle to break the law, leaving the vehicle on the side of the road would also count here.
Sorry, think you are on to a losing case here.