Changes

Catch a train to to Macarthur Station at the end of the Campbelltown line, (single off-peak train fare from Sydney Central $4.50) walk north to Narellan road and try to find a car there. If you want to increase traffic, follow Narellan Road to the intersection of Hume Hwy and try on the onramp. Note: don't try to cut through the university from the train station directly to the intersection of Hume and Narellan - unless you are happy to climb a fence.

(Still valid, confirmed by Haoeg on 7th Sept 2018, waited at Note: don't try to cut through the onramp)university from the train station directly to the intersection of Hume and Narellan - unless you are happy to climb a fence.