Answer: Ferraris
We hear Memphis tell Otto over the radio that Diana, Tricia, Rose and Nadine are on their way. Diana was a 1995 Ferrari 355 B, Nadine was a 1967 Ferrari 265 GTB4 and Rose was a 1987 Ferrari Testarosa. Now originally, there was only a Patricia, but she was a 1958 Cadillac El Dorado Brougham. Maybe a blooper?