A: What is your imagination about life in the future?

B: Well, I wander it must be dramatically improved due to high-tech. Take transportation for an example, the system of transportation will be more intelligent. Now America,Japan and European countries have been working on the vehicular networks which is aim to allow vehicals communicating while driving to avoid collision. We can dream of a traffic-accident-free world in the future.

A: I agree with your mind . In addition, I think we can find the most convenient path to our destination with electronic devices.

B: Maybe scientists have found a substitute for gas as fuel to drive. And global warming is no long a question until then.