Yes . They are still useful .
Why is any car useful? Your question makes no sense.
driving a car
Friction is useful when you are trying to stop a car, but not useful in the pistons of a car's engine (It makes them less efficient).
To allow you to see behind you and each side of your car.
Torque which moves the car down the road.
you can fix your car when it has a problem
It is useful!
not really
No
Mod it, useful website for car mods is gtainside.com
Car companies are most useful for designing and manufacturing cars. Most car companies spend a great amount of time and money trying to develop cars that are more environmentally friendly.