Pierre Roy was a French car manufacturer based in Grand Montrouge, Seine. The marque's first model was fitted with a 10/12hp two-cylinder engine and used shaft drive. From 1905, later models were equipped with larger four-cylinder engines, offered in 14/20 and 24/30hp variants, which also employed shaft drive. Production of Pierre Roy cars appeared to have been limited, with only a small number of vehicles built. At least one example…