What does it mean to call someone a YUCA and Where did the term come from?

Playing on the Caribbean food named yuca, a YUCA is a young, upwardly mobile, Cuban American, in other words, a Cuban yuppie.

These are people in their thirties (or slightly older) who came from Cuba as small children or were born in the United States.

They are well-educated, have successful careers, and tend to be more liberal than their parents. They can speak both English and Spanish, but prefer English and have little interest in living in Cuba should the Castro regime fall.

Their children have even less interest in doing so.