My idea is a car that can drive, fly and swim. It has three floors, and it runs on water instead of gas, so it would be better for the environment. The top-floor has a propeller that can move you in water and air. There is an extra set of wheels that you can use to drive away to get help if you get in a car crash. The top floor has no roof. The bottom and middle floors have chairs everywhere and a table for each two chairs. 500 people can fit in the car.