Regional differences are a huge part of the American identity. Food, culture amongst other things are what makes the United States so diverse apart from geographical features and whatnot.
This being said, certain vehicular trends are more specific to certain parts of the country than others.
1. The Donk (Or whatever you call them): Mainly seen below the Mason Dixon.
2. Swangas: Mainly Houston, maybe other parts of Texas?
3. High trim 2500 or 3500 trucks with Ranch Hand front bumpers: Georgia, Texas and a few other deep south states.
4. Lifted Tacomas: Mississippi, Louisiana, PNW?
I’ve never seen so many lifted Tacomas than Mississippi and Louisiana have. The PNW also has a bunch according to my friend who lives near Portland.