Correspondence.

Stearn v. Petrol. The Editor," THE COMMERCIAL MOTOR." Sir :—Can you give me the relative hauling power of a ioh.p. steam engine and a ioh.p. petrol motor? For example : I see a......

British-built Motor Vehicles.

The Simms-Welbeck 1907 Models. Among those companies which have helped to make the term " British built," as applied to self-propelled vehicles, a criterion of the best......