Linguist Bert Vaux created a survey, completed in 2003, polling English speakers across the United States about their specific everyday word choices, hoping to identify regionalisms. The study found that most Americans prefer the term "sub" for a long sandwich, "soda" (but "pop" in the Great Lakes region and generic "coke" in the South) for a sweet and bubbly soft drink, "you" or "you guys" for the plural of "you" (but "y'all" in the South), "sneakers" for athletic shoes (but often "tennis shoes" outside the Northeast), and "shopping cart" for a cart used for carrying supermarket goods.