Danny Wilde (Tony Curtis) calls his car a (red) Ferrari. Technically his car is called a Dino 246GT. It has a V6 engine, made in collaboration with Fiat. Ferrari named all their cars with a V6 engine, Dino. Enzo Ferrari did this in memory of his too young deceased son (Alfre) Dino Ferrari.
Lord Sinclair's Aston Martin UK registration number is PPP 6H.