Cars cause a lot of harmful pollution William, so we need more vehicles just like the one you invented on the roads! You have created a good sustainable model, the car is continually consuming air, using it for power, then expelling it again. This would require so little finite energy and is a really innovative idea! I like that you have created a clear diagram for us too, we can see the parts of the car and how they would function, so we can precisely understand the Air Powered Car! Keep inventing William!