Mary travels to Las Cruces, which is portrayed as being out in the middle of nowhere and requiring a 10 mile drive down dirt roads. Las Cruces has a population of 101,000, has an international airport, and is at the intersection of two interstate highways (I-10 and I-25).
When the name "Carlos Ramirez" is mentioned, Mary says "sounds familiar". Carlos Ramirez was the name of the Puerto Rican benefactor who appeared in almost every episode of The Flying Nun.