The Benz Patent-Motorwagen could reach a maximum speed of less than 5 miles per hour .
Benz later built more Motorwagens , number 2 boasting 1.5 hp ( 1.1 kW ) , and number 3 with 2 hp ( 1.5 kW ) , allowing the vehicle to reach a maximum speed of around 2.5 miles per hour .
Benz Patent-Motorwagen