Of course he's wearing a Ford t-shirt.
There have always been and likely always will be stereotypes about those who buy certain cars. Like ricers and the Honda Civic. That's just one example. But what are the people like who drive one of the most beloved American cars of all time, the Ford Mustang? Honestly, Mustang owners are just like everybody else who happens to love a specific car. They talk about their car with other Mustang lovers. And then there's that smack talk regarding the competition, in this case the Chevrolet Camaro.
That's always fun to do. But we really, really doubt that Mustang owners are anywhere near as douchey as this guy. Good thing it's all an act, but still. Gotta makes you wonder about some people, you know.