Chitty Chitty Bang Bang by Ian Fleming
Pssst... want to know a secret? Chitty-Chitty-Bang-Bang isn't any ordinary car. It can swim. And fly. It can even think for itself! Chitty's owners, the Pott family, love adventures. But they've never come across gangsters and explosions and secret underground lairs before! So when they find themselves in a desperate chase to stop the gangsters' evil plan, they know where to turn, Chitty to the rescue!