There were quite a few different versions and race car drivers:Was our version different to the rest of the world? Did they have different versions for different countries?
Australia - Mark Winterbottom (V8 Supercars)
Germany - Sebastian Vettel (Formula One)
Latin America - Memo Rojas (ALMS)
Russia - Vitaly Petrov (Formula One)
Sweden - Jan Nilsson (STCC)
Spain - Fernando Alonso (Formula One)
All version have the regional character talking to Lewis Hamilton (Formula One) at the party when they arrive in Tokyo.
I believe (although I haven't confirmed it) that the American version used Jeff Gordon (NASCAR) in this side role (Jeff also appears in our version in the races and at Radiator Springs in the finale)