Auto Sidecar was a motorcycle produced in 1914.
The company was based in Cubitt Town, London. They produced a wicker sidecar attachment, which clamped to the side of a bicycle. The whole thing was driven by a small two-stroke engine which hung at the rear of the chair.
Sources of Information
The British Motorcycle Directory - Over 1,100 Marques from 1888 - by Roy Bacon and Ken Hallworth. Pub: The Crowood Press 2004 ISBN 1 86126 674 X