I wonder how many different "cultures" do drivers have? People from different localities drive differently. I hope they use drivers from say, NY, LA, and vario

I wonder how many different "cultures" do drivers have? People from different localities drive differently. I hope they use drivers from say, NY, LA, and various small towns to teach the AI. People that lives in towns with ~ 10k people drive differently that a new yorker on the same town. EDIT: They might be training with a biased sample