Some states are more patriotic than others when it comes to buying vehicles from domestic automakers.Not surprisingly, the strongest sales for the Big 3—General Motors, Ford or Chrysler—come in the Midwest where American-made models have long dominated the road. “Even as the line defining what is or isn’t domestic has blurred, perception, attitudes and buying habits are more resistant to change, particularly in the heartland,” said Jesse Toprak, senior editor with TrueCar.com.