Use the force of compressed air to move a “vehicle”
What to do ?
Blow up each balloon, holding the end closed with your fingers so it stays full, and have someone else tape a straw to the middle of the balloons. Let the air back out of the balloons.
Take the piece of fishing line and stretch it tight between the back of two chairs spaced about 20 feet apart. Leave one end with a bow knot so that you can untie it easily.
Visit Here for more.