Which transportation vehicles has changed people

Which transportation vehicles has changed people`s lives?
Nowadays, many forms of transportations, such as airplanes,
bicycles and automobiles, have been introduced into the society.
Though people`s views vary from each other, I believe that it is the
automobiles that changed people`s lives. Because automobiles
could give people more convenience, save everyone`s time and
increase the efficiency of the world.
Automobiles have given many freedoms to ordinary people. For the
working people, the car enabled them to work in the city and live in
suburban areas many miles away.
Admittedly, commuting is commonly believed uncomfortable.
However, as the land in the city is expensive, a comfortable big
house in the suburbs is more preferable than a
small apartment in most people`s opinions. Without automobiles,
they would not have this opportunity.
Automobiles give people great convenience, too. Although public
transportations are cheap, they cannot always follow the lines in our
mind. It means that we will spend more time on traveling than really
need. I once go to a university to do something urgent so I went
there by taxi. It cost me only 20 minutes. But when I got back by a
train and a bus, the journey cost me almost an hour. “Time is
money. ” The automobiles have given a great many conveniences to
today`s world. Of course, we had better take a plane for a very long
journey, but the automobiles are more accessible for ordinary
people in daily lives.
To sum up, the automobiles have greatly changed our world and I
believe that they have contributed much to improve people`s living
standard.