Have no clue what you mean by crinkly metal. Engines are made of steel or aluminum.
slows car and wears metal out
When the internal combustion happens inside the engines cylinders, a "by product" is made. This is called exhaust. An exhaust system takes that from the engine out the back of the car through metal piping.
The question is essentially unanswerable. It depends on the exact design. There have been experimental engines made that contain no metal at all (they use ceramic components).
Certain car parts can be made by running molten metal into a mould formed in special sand. This process is were the term caste iron comes from.
The most common types of remote controlled car engines are electric DC motors.
It is made of metal. It is a car.
They are made in automobile factories by humans who are trained to complete this task.
they are made out of metal such as metal in metal mixed with metal and metal with loads of metal and metal and you make street car my secret ingreidant.
some car doors are made out of metal there is a different variety
Metal lol
Steel
Depends on what car it is, and where the car is made