There is more to this than just population, awsure. You also have to remember the audience. Detroit currently holds only around 50% of the U.S. market and it is continuing to drop. The American's love for muscle cars is very seasonal; however, the Australian's love for American muscle is pretty consistent. Holden had V8s cars consistently during the fuel crisis eras and Ford was bring V8 model cars in Australia when they were too busy getting rid of them over here and unlike Ford's V8 car offerings besides the Mustang (the Crown Vic) these were actually performance orientated. Plus, we can thank the Australians for the fact that we even had the 04-06 GTO and the upcoming G8 and Camaro as these are on the same line as the Holden Commodore.

Correct me if I am wrong, but is the real reason why you don't want them to sell it in Australia or anywhere else is you are concerned that it will drive the price up on the Challenger at home? I would say that if they sell this internationally, it will lower the chance that it will be a limited production run and help keep the price lower.

There are countries that it might not make sense to sell this kind of car equipped like this, in like say Russia, but I belive if they were to offer this car in Europe equipped with the right type of engines, it could potentially succeed. In the European market, it would naturally need a diesel offering as they like diesels. It might make sense to keep the Challenger in Europe to be a limited production model, but I believe if they sell it in these other countries, it will help the chances of the Challenger being an affordable mainstream car.