Has automobiles improved modern life or caused problem1

Has automobiles improved modern life or caused problems?
In my opinion, automobile has caused serious problems in our
society. Because the prevailing use of automobile brings us a lot of
environmental harm, traffic accidents, and traffic congestion.
First of all, one of the main reasons why our atmosphere is being
polluted is the using of great amount of automobiles. It is quite
obvious that the exhausted air which is emitted by automobiles is
very dangerous and harmful to human`s health. As people drive
more and more automobiles, our health is being threatened day by
day.
Furthermore, it is reported that the traffic accident kills more and
more people everyday in all around the world. Many people also
lost their legs, arms permanently during car accidents. Many kids
lost their parents because of car accidents when they were young.
Traffic accidents cause many tragedies which occur in our life.
Traffic accidents bring us a serious social problem.
In addition to those above, traffic congestion is also a important
adverse element which is brought by automobiles. Many people
have the same experience that they had to wait hours in their cars
during a rush hour. Traffic jam wastes our lots of time.
Admittedly, automobile gives us many advantages in our life.
However, it has more disadvantages. It has caused serious
problems in terms of environmental harm, traffic jams, and traffic
accidents.