The Aussie touring car championship use to be open to foreign cars until the Nissan Skyline GTR came on the scene about 15 years ago and pissed all over the locally produced Holden and Ford V8s which had dominated the racing up until then. The problem was fixed when the Skyline was banned, but they couldn't just ban the Skyline, that wouldn't look right, and besides another wonder ricer would probably only turn up at some stage and make the locals look bad again... so they banned all foreign cars, which has left the championship a boring two nag race- Holden and Ford.