Hummer is Hummer. It is an automobile brand produced by American General Company, which mainly produces military vehicles and off-road vehicles. Utter, the founder of General Motors, is a bicycle manufacturer. 1903 set up off-road vehicle department.

Hummer means something buzzing, a hummingbird. Hummer became famous in World War I in the Gulf, and Hummer became synonymous with dynamic off-road vehicles.

Precautions:

1908 John Willie bought the off-road vehicle department, 19 12 set up Willis off-road vehicle company to produce Willie knight cars. Most off-road vehicles use drum brakes on the rear wheels, so it is difficult to control the car when reversing downhill. The four-wheel disc brake built into the Hummer axle is very effective whether reversing downhill or driving forward, so the four-wheel disc brake is irreplaceable off-road equipment.