Almost all of them are steel. Some trucks, late 80's early 90's have a thick fiberglass leaf spring in the back.
Because it can be used to make new cars
Materials used to make cars include Aluminum, steel, fiberglass, and plastic. Each material is used for making specific parts due to their unique properties.
copper
Beds are made of cotton, springs, wood or steal and cast iron.
materials (as fabric, padding, and springs) used to make a soft covering especially for a seat
used to absorb shocks.
~Lettuce and Tomato ~TheEpicOne Turtle's Shell's, and leather.
Humorous answer crude oil, old cars, mummies, science teachers and Justin Bieber.
Materials which were refined from from primary industries are used to make cars. Examples are rubber, glass, aluminum, steel sheeting, and plastic I am still looking for a few more..however
Well..old cars they were made out of metal
you do not use materials while inventing. you use materials while buiding
The materials used in a car's braking system includes brake pads, brake caliper, and rotor. A cars brakes can be accessed by removing the tire from the car.