What If There were No Gravity?

Have you ever thought if there was no gravity how would it be? I think that it would be very good and environmentally friendly. There are some reasons for my thought. For example, there wouldn’t any cars in cities, we would travel faster or based on the information that I gave at the beginning of this sentence there would be less use of fossil fuels and because of that there would be less global warming than today.
1.There wouldn’t any cars.
In these days we all use cars to travel. This is because there is gravitational force on the Earth, but how would it be if there were no cars? It would be great. Because there wouldn’t any harmful things like fuel. If there were no fuel then there would be less harmful gas. Because of that the environment would be affected less than today. Also, there wouldn’t be global warming that threatening our and animals’ lives.
2.We would travel faster.
Because of we would be flying in this situation we would travel faster than today. We can go somewhere with the way that we want. It is a very good thing for us. Because people want to be free in their choice.
3.Global warming would be less.
Because of we wouldn’t use cars in a situation like this the exhaust gas that are produced by cars wouldn’t release. So, the harmful gas in world would be less. According to this information we can say that Ozon layer would be affected less than today. It means global warming would be less.

If I summarize, if I wanted to change one law of physics that would be definitely gravity. Because there wouldn’t any cars in Earth there wouldn’t any harmful gas released from cars. So, the global warming wouldn’t reach the level that it has today. From this information we can understand that it would be environmentally friendly to our Earth and to us. Also, we would travel faster if we had this situation. We would be able to travel somewhere the way we want to go and isn’t it the thing that people want to have?