1920s
The aptly named Rolls-Royce 20 HP, also known as the 'baby'
Rolls-Royce, was launched in 1922. Aimed toward owner-drivers it
became popular with the burgeoning professional middle classes of
doctors, solicitors and businessmen. Its engine was a straight
six-cylinder with a capacity of 3,127 cc and had a maximum speed of
62 mph.