Finland's Mikko Hirvonen drives his Ford during a special stage of Rally Australia near Lismore, about 100 km (62 miles) south of Brisbane, in this September 4, 2009 handout picture. Rock-throwing protestors forced organisers to cancel the sixth stage of the Australian leg of the World Rally Championship on Friday. Drivers were forced to stop at the end of stage five as organisers frantically tried to clear the rocks off the course of the 11.33 km sixth stage in northern New South Wales. REUTERS/Jeremy Rogers/Handout (AUSTRALIA SPORT MOTOR RACING) NO ARCHIVES. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS