If you haven’t already seen this, check this story:
http://www.brisbanetimes.com.au/news/national/toy-cars-with-asbestos-parts-illegally-imported/2008/01/13/1200159311678.html
The story concerns a range of R/C monster trucks for sale on e-bay, and containing asbestos in the disk brake pads.  Pass the warning on to anybody you think may have one of these trucks.
This is a great reason for buying from Australian hobby stores, or from reputable dealers.  Sometimes there is a good reason why things are cheap on e-bay…