Mario Andretti and his twin brother, Aldo, were born in Montona, Italy. World War II broke out around the time they were born, in February 1940. When the war ended, the peninsula of Istria, where Montona was located, became part of Yugoslavia. So they were trapped inside a Communist country. For seven years, from 1948 to 1955, the family lived in a refugee camp. They waited several years for U.S. visas.