11 months
Carolina Wilga: German backpacker found alive after 12 days missing in remote Australian bushland
www.theguardian.comThe 26-year-old’s van had been found abandoned but police hail a ‘great result’ in finding her safe but ‘ravaged by mosquitoes’


West Australia is huge. Like really really huge. You can for weeks - with a car- without meeting someone.
Please don’t, though. That really requires experience and a lot of equipment. (Amongst others a sat beacon for emergencies)
But read up on the Gunbarrel highway or the Canning Stock road.