W. O. Bentley, the company's founder, got addicted to motor racing while straddling a motorcycle, but he wanted more power. After the end of the great war, during which he was employed making engines for the Sopwith Camel fighter bi-plane, he went about crafting an innovative and powerful racing engine that was inspired by the aluminum pistons he had been using in motorcycles for several years.

Yep, Bentley is the bastard child of a high-strung racing motorcycle and an early fighter plane. By the end of the decade the Bentley 3-Litre had been born.