I lived in western Maryland (Garrett County) and people there and in adjacent counties in WV and western PA say buggy rather than cart (shopping cart).

I think that is a Pittsburgh thing too isn't it?
Also, when I lived in Atlanta they definitely referred to all soda as Coke (by natives and other southerners at least, as there were a lot of people from other regions of the US living there who didn't use that term). One of the perks in the office I worked in was free coffee and tea, and a refrigerator stocked with Coke and diet Coke. At restaurants or parties, God forbid if you asked for or ordered a Pepsi. A very loyal Coca Cola town.
Being from SE/SC PA I grew up saying "wood-a". But after 4 years in State College, my classmates and friends beat that out of me, and it's now "wah-ter" for me.