A car is useful for alo of things. like transporting things and getting you and you family/friends to places.
Yes . They are still useful .
Why is any car useful? Your question makes no sense.
driving a car
To allow you to see behind you and each side of your 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).
Torque which moves the car down the road.
It is useful!
you can fix your car when it has a problem
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.