The linking R is a linguistic phenomenon where people will add a r at the end of their words, usually when the word ends with a vowel sound and the following word starts with another vowel. For example, Americ-er-is instead of America is. This video explains it well

This is mainly associated with the UK and Australia and New Zealand (one of my Aussie friends always said Vodker instead of Vodka haha) but I know of at least two instances of it occurring in American accents. The first is Billy Joel’s “Brender and Eddie” in Scenes from an Italian Restaurant (his best song, of course) and Eartha Kitt as Yzma in my favorite movie of all time, The Emperor’s New Groove, seen here (Show us where the talking llamer is)

Eartha Kitt is from South Carolina and Billy Joel is from New York, so these are two different regions having this in their accent. However, both are pretty old and I want to know if this accent is still showing up in younger Americans