Transportation of passengers and cargo.
Many things are not necessary. Some of them, like fast cars, serve useful purposes.
It is useful to cars because it helps them move for one place to another
When you have to tow things or bring people places. I dont like cars :P
cars pencil
Cars tomove
cars
Machines are useful for all kinds of things. Machines can give you a break from using your hands.
well it does for me but it still useful for some things
in those countries where the patrol is very costly, gas cars are very useful because it overcomes the problem of patrol.Gas is not as costly as patrol
flying cars.
Toy cars are so useful because they can keep children occupyed (they are good fun) and also they can be collected and can be sold for even more.
Cars are useful as they take us from our homes to our jobs, to the store, to events we attend. In western society the car has become a necessity.