The scientific and technological progress of the 20th century has allowed people to overcome time and distance, to cover in the twinkling of an eye the vast expanse of our planet. The whole world is open now. The limitations of former times have ceased to exist.
Modern life is impossible without travelling. To begin with most of us in big cities travel every day to our schools, offices and factories. For some people it is quite a trek to get from home to work. They go by underground, they change to a bus or they take a taxi. From time to time we have to go to another city or country on business. Then after a year’s work people go on holiday and they do not like to spend it at home.