In the 1970s, a sporty disco-white car that turned into a submarine was the kind of hybrid required by James Bond. In those pre-computer movie days, filming a submariner car required a real submarine car, which was built for The Spy Who Loved Me but then lost for decades.
https://jalopnik.com/how-a-guy-found-a-1-million-james-bond-car-in-a-100-s-965516125