Now our environment is becoming worse and worse. Everyone wants to live healthily. Here is some information about what our life will be like in ten years. Cars will run on a solar power   and will be much cleaner. They will be much safer. For example, if you are too close to another car or if you are driving dangerously, your car will slow down or stop by itself. New cities will be built in the sea. Some cities on water will have two floors. People will live on the second floor, the first floor will be used for traffic, shops and factories. Biotechnology   will make food better and healthier. Plants without insects will be developed. The taste of fruit and vegetables will be better and food will be able to keep longer. Many new ways to cure illness   will be found. However, some new illness will appear  . Which is the best title for the passage?
Cars in the future. What will our life be like in ten years? How to keep food longer? Where will people live in the future?