"It was not Frank's Morris"
Morris Minor saloon 1932
Creative Commons Attribution Share AlikeMorris Minor saloon 1932 - Credit: Lars-Goren Lindgren
Morris Minor fabric saloon 1928
Public DomainMorris Minor fabric saloon 1928 - Credit: unknown

 Morris Motors was established in Oxford in 1912. By 1924, with a factory in Coventry, it became Britain's largest car manufacturer. The company entered the small car market in 1928 with the launch of the Morris Minor, which was produced until 1934.

The Morris Minor is possibly the sort of small, reasonably-priced car which would have belonged to Frank Crawley, Maxim de Winter's agent (the individual who manages a country estate on behalf of its owner) at Manderley.