Unfortunately not, dude - seeing as a fair chunk of Sydney residents live out West, there'll be heaps of people heading the same way you are along the M4 and/or the Great Western Highway. In fact, the traffic usually frees up after the area where the M4 and M7 intersect, which is past Eastern Creek...
Bring the car anyway - my car is also a stock-looking Stagea on 18s, so yours won't be alone!
OK, the information has been sourced, and Eric and I (and other Execs) are now working out our best plan of attack to make the most of the night (and hopefully carry those plans through to any future nights that are held).
We'll let you all know what the go is soon! Stay tuned...