There are many different materials that a car rim can be made of. Some of these materials are chrome, aluminum, steel or plastic. Aluminum is the most popular material for car rims to be made of.
A car rolls by using it's wheels.
Cars are made from many materials. Bodies can be made of metal, plastics, aluminum or even carbon fibers. Wheels and internal parts have many materials as well.
Car door panels may be made of a number of different materials. Most of these panels are made from metal or plastics.
They aren't always made of light materials. For example a 57 Desota, very heavy hood. Depends on the manufacturer, the hood is usually made out of the same material as the rest of the car.
all steels start as iron ore
Today the outer bumper shell is made of plastic. The inner bumper is made of steel or alluminum.
Because they are to be lifted by hand to expose the engine.
Everything a car is made out of has come from the earth. The Steel, plastic, other metals, rubber, aluminum, copper, etc.
Depends on the car. Could be steel, aluminum, composite materials, fiberglass, or even Kevlar (as with the HMMWV, but not the civilian Hummers).
Car windshields are typically made of a laminated safety glass which is made up of two curved sheets of glass and a plastic layer between them. They are than bonded onto the window frame of a car using a special paste.
In the past (quite a long time ago!) most car manufacturers actually made all the parts that went into the car, so they bought metal, plastic, wood, etc, and then made parts out of these materials, then made a car with the parts they had made. These days most car companies buy parts made by other companies, and then "assemble" the parts into a car. So they no longer "manufacture" a car, they "assemble" it.