An option for those who don't want to drive may be freight via e-go
using a bike carton(from any bike shop) normally free or beer money.
As an example via on line calculator:
skid/ crate, 130 kg , 170 x 90 x 60 dimensions can be sent from
mel.(Dandenong) to bris (pinkenba 5mins from airport)for $160, return is $108.
If anyone is interested in this im happy to pick up + store a crate(s), drop off , or if 2 fly in riders teamed to hire a ute may be worth a thought.
I am 1 hr north from the airport, 2 hrs from the track , im sure others closer to the track can help too.