I guess the good is outweighs the bad anyway. But rather, there is another more surpursing invention which is airplane. It does not only abridge the course between countries but also break the border between cultures.

Sorry , dynamite cannot improve our communication . It is my slip of writing .

Vehicles really change a lot of for this world and almost everyone can share the convenience of transportation.  Not only the vehicle can change the distance among cities , but also it alter the way of communication and phychological distance . Before the vehicle was invented , people had to walk or ride a horse to communicate with other people  . Obviously , they could not spread essential information so quickly . I have a car and I like to drive it around the city to savor different landscape .

In spite the car is so fancy , I think the most remarkable achievement in human history is not vehicles . Electricity , internet and dynamite should be the most amazing invention in the world . We cannot share so wonderful social network without these inventions .

Of course people take it way too far, and get themselves into debt over fancy cars or having to buy more then one per household. However, i can't imagine my life without good transportation. I would never get to see the world!