Growing up near Detroit, I enjoyed the rivalry of the Big 3 American brands. Personally, I can't think of a Japanese brand as American. No offense to those who can. For me, NASCAR is less interesting with Toyotas.
If Dodge came back to NASCAR everyone would go "whoo-woo! Hemis!" but they have haven't been an American company for over 20 years and built more Chrysler 300C's in Austria than they did in the US.
A Camry is at least made by Americans for Americans. Chevy SS's were made by Australians for virtually nobody.