How do you steal 100 cars?

The Herald reports:

Police are investigating a major break-in at a South Auckland car rental yard where almost 100 vehicles were stolen on Friday night.

Inspector Matt Srhoj, Counties Manukau West Area Commander, told the Herald it is believed around 100 vehicles, registered to Jucy Rentals, were stolen from the company’s Mangere yard.

How the hell do you steal 100 cars without anyone noticing?

Do you have 100 people as part of the theft, all driving one each?

Do you have 20 car movers that take six each?

Where do you store them all?

Also how did they get keys to them all? Surely the keys are kept in a locked safe or something?