The caption says (translated with Google): VI Lenin (sitting behind a cap) in Stoewer 19/58 on the area of victims of the Revolution (formerly the Campus Martius), after the wreath-laying ceremony during the II Congress of the Comintern. Petrograd, July 19, 1920
The 19/58 HP may be a mistake as I think the car in question is a Stoewer B4 which had a 19/45 PS engine and one such car participated at a Russian motor race in the 1910s.