A drawing and the first page of the specifications of the first patent issued to C. E. Duryea
It can be readily seen that this drawing was not made after the plan of the first vehicle.
Drawing of 1885 Benz engine
Drawing of 1885 Benz engine, showing similarity in general appearance to Duryea engine. From Karl Benz und sein Lebenswerk, Stuttgart, 1953. (Daimler-Benz Company publication.)
Illustration from U.S. patent 385087
Illustration from U.S. patent 385087, issued to Carl Benz, showing the horizontal plane of the flywheel, a feature utilized by the Duryeas in their machine.
Phantom illustration of Benz' first automobile
Phantom illustration of Benz' first automobile. (From Carl Benz, Father of the Automobile Industry, by L. M. Fanning, New York, 1955.)