Câu trả lời:
My invention is a flying car. Since I saw Back to the Future, I have always wanted to own a flying car. Well, it looks just like a normal car with no wings. It can fly because it has a special engine that runs by solar energy. It does not need a runway to take-off, either. It can run on roads and of course it can fly on air, too. I will not have to worry about traffic jams. That is why it will be popular to everyone.