[quote N7BFF33P6BCCECMT]I think the big wigs from the US thought that it was to be done on the banked oval but didn't realize it hadn't been completed at You Yangs[/quote] Sort of, LX355 - Mercury sent three 1965 Comets from the bottom of South America through to Alaska. You're right about the banked circuits, in late 1963 they ran 100,000 miles around Daytona Speedway with 3 cars - each one completed 100,000 miles in 40 days apparently.