What's that carbonated beverage sold in vending machines?

Soda where I live. Coke is a particular type of soda.

When I was a little kid I remember it always being called Pop, but somewhere along the line it became Soda and it's been that way ever since. Couldn't tell you when, how or why it transitioned, just did.

It's been soda in my part of New England since forever.

Soda, I've lived all over the united states and never noticed if anyone ever called it anything else. Now wondering.....