Ercole

all Moto-Guzzi's don't have 2 wheels. some have 3, such as the Ercole{Hercules} models shown here.
top picture is 1952 model without a cab. next is a 1952 model with a cab and last is a 1959 model with cab. these are tough little vehicles although not fast in any sense of the word. 500cc single with 5 speed and reverse transmission enables the Ercole to haul almost a ton of whatever fits. that's a lot to move around with only 500cc's.