Who is Johnny Garcia from Travels with Charley: In Search of America and what is their importance?

Johnny Garcia owns a bar in Steinbeck's hometown. Garcia and Steinbeck reminisce in the bar and come to realize that all the old gang is now dead. This leads to a very melancholy time that Steinbeck finds intolerable. He leaves the bar with the realization that a person can never go back home. Home changes, and in California it has changed drastically and permanently.