Regional Differences: Shopping Cart vs Buggy?

I grew up in New Jersey and when we went grocery shopping we always called the shopping cart a “cart.” Then I moved to Texas and met my wife, who was from Louisiana, and she always said, “Go get us a buggy.”

I thought it was odd, calling it a buggy, so I started paying more attention to what people called them and it seems the general term down here is “buggy.”

I’ve also noticed some people on Fluther call it a buggy also, so I’m a bit curious as to the regional use of words for a shopping cart.

So, where are you located and do you call it a “cart” or a “buggy”?