there is a great run that we used to do on moto's!
up maquarie pas, through robbo, turn off just after robbo, drive down that road, and end up at a t-intersection and then left down to kangaroo valley!
brilliant run! roads aren't queensland smooth but it's all twisty's which would suit the mazda's!
i'm aware it's a fair run for qld's and melb's but always an option!