Simple Explanation:
If every car flew, there would be air congestion. Even if cars could hover, there would be billions of crashes due to this.
Anyway:
So basically, the USA has stolen everyone else's oil, and NOW is using their own?
The whole idea with rockets is they produce more pollution by burning stuff than they would prevent by getting stuff.
Besides, from the moon? No way, too expensive.
Nuclear works, but is dangerous and stuff.
The others are too expensive and don't produce enough.
You have your head stuck so far up your ass that I don't think you can even see anymore.
First:
We are not stealing oil. We are buy it you douche.
Second:
You are correct about how rockets produce a ton of pollution, but the nuclear part is complete bullstuff.
Until you understand on how a nuclear fission reactor works, don't speak. At all. It is dangerous however, but that is a risk the world has to take for clean, cheap power.
Lastly:
Flying cars aren't some sort of stupid magnets. There wouldn't be anymore crashes with flying vehicles then if they were on the ground. So let's shut the forget up unless you know what you are talking about.