Lightning McQueen and Mater are racist. In Cars, McQueen and Mater go “tractor tipping” the tractors being the Cars equivalent of cows. These tractors must exist to create crops, but the cars wouldn’t need this, as they subsist on a diet of gas. It would make sense, then, that these “cows” grow crops somehow. However, as they are too vehicles, they wouldn’t eat the crops themselves. What I suggest is that they use them to create biodiesel. Additionally, if they have discovers agriculture, it would make sense that they are an intelligent, sentient society. This “tractor tipping” seems like a mockery at best, and a hate crime at worst. It would follow, then, that both Lightning McQueen and Mater are racist.