Tesla also use parking lots for storing cars as space is at a premium at the factory. It is hopeful that it is not Australian cars stored at such places to reduce the risk of insect/plant matter contamination but who knows??
. It's a sort of concrete parking area but you can see plenty of grasses growing through the concrete
Currently WA cars can be offloaded in Thailand and/or Singapore and then stored somewhere waiting for another ship. This is another risk for insect and plant contamination. I know that my car was built on 28th of January but didn't leave Shanghai until 20th February so was presumably stored somewhere for 3 weeks if not enough room at the factory. It is now sitting in Singapore for a planned 4 week duration - stored anyone's guess.
It really is a minefield and I appreciate the hard work that goes into keeping Oz safe. Fingers crossed there are no contaminants on my ship or that 6 week journey it's currently on will go even longer.