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Made by Sophia
My vehicle is propelled by a rubber band. It consists of four cardboard wheels (with one-inch diameters) since I couldn't find suitable bottle caps, two Popsicle sticks, two wooden sticks wrapped in paper straw supporting the wheels, and a large bolt on the bottom right of the car. I don't know the purpose of it, but the video said to hot-glue the bolt.
Anyway, this is how my vehicle operates:
1. There's a wooden peg I hot-glued to the tip of the Popsicle sticks, at the front of the vehicle. The rubber band hooks onto the peg. At the back of the vehicle, in the middle of the wooden stick I hot-glued another wooden peg on the back wooden stick supporting the back wheels that I hook the under end of the band onto.
2. After hooking up the band onto each peg, I make sure the peg at the back of the vehicle can rotate around the wooden stick that it's glued to. With the peg's ability to rotate, the rubber band rotates too and overlaps the wooden stick on each side. That way, potential energy is stored in the band wrapped around the stick.
3. Finally, I push the car backwards (pushing from the front wooden peg where the rubber band is hooked), observe how the band wraps around the back, and release. It went 4 ft. 3 in. far.

Hi Sophia,
Great job and good looking car! I am so glad you got the idea of energy storage with this project.  BTW, what are the wheels made out of?
~Mr. Frengel

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Tanav Kyatham

This car was made from legos from my house.It took me time to think what should my car should be then I thought legos.I look at the Internet for ideas and i saw one.I thought it was gonna easy boy I was wrong.So basically i thought i had these pieces but no i never had them.I thought it was gonna be the end for me but then I thought I should not give up so I made prototypes one after another.Eventually I was able to make it.It took effort but it was worth it.

It Took a lot of pieces for this to work.

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Brandon Lin

My car is a “car” that is powered by a rubber band that spins. You might be asking “how does this work?” and I have an answer. So to use my car you will have to spin back the long straw while keeping the shorter straw still. Next you will have to simply put it on the ground and let both of the straws go at the same time. A lot of problems of making my two wheeled car was finding materials to use that were around my house. For example: the base of my car had to be a cylindrical base with ends that could fit straws that wouldn’t break or have the rubber band snap, so I looked around my house and toyed around with different straws. i found the right ones and put them on. This car took a while and I hope you can understand.

Here is a picture

Hi Brandon, This is brilliant! Simple ideas usually have a power to them that is surprising and this is no exception. With minimal parts and fewer chances for the power to get lost in transfer you made something really different. How did it work?

~Mr. Frengel

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Rubber Band Powered Car    Santhony Chan

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Rubber Band Powered Car    Santhony Chan

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I used toothpicks and wooden BBQ sticks as the base. I couldn't find our hot glue gun so I put the glue refill over a candle. I had two thin bottle caps as the front wheels and bigger ones in the back with a CD attached to it. I used straws as the axles and different sized rubber bands came in handy. Overall, I really had fun with this project!

Hi Santhony,
I'm glad you discovered the fun of all of this!  Its when you try this stuff and realize you are having fun doing it that my work is worthwhile. Nice looking car as well!
~Mr . Frengel

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By: Kanish Marlecha
My car is made out of toy pieces. I used a lot of TinkerToy pieces because I didn't use them anymore. My first design was a failure but provided the basis of my second design. I used cylinders, long sticks, and placeholders for my car.

Hi Kanish,
I am impressed by the tinkertoys... I haven't seen these since I was a kid and this is a GREAT use for them!! If I had an award for nostalgia... you'd have won it.
How well did it work!?!?!??

~Mr. Frengel

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Made by Sophia Sheth
My vehicle, propelled by a rubber band, consists of LEGO. The back wheels are larger and the front

Thats awesome! We'd love to see a picture f the finished product if you have one.
~Mr. Frengel

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how far it goes so here's the answer for distances on wooden floor and rug
for wood I did from my room to my parents room and it went half way or about 3 feet as for rug 11 inches.

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My car was made out of bottle caps, straws and tooth picks. First, I pocked holes in the bottle caps and straws using the tooth pick, then I put the tooth picks on both sided of the straws, next I put the bottle caps on the tips, and then i put the rubber band. I couldn't find any more bottle caps so I just used lego wheels instead.

Hi!
This is another great instance of "Similar problems require similar solutions" If you look at a top fuel dragster they have a design amazingly similar to this. In particular look at the back wheels vs the front. ~ Mr Frengel

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Made by: Samik Sidhu

I made this car by cutting out a small cardboard box into the shape of a car, cutting a little slit into the back of the car so I could easily insert my balloon into it. After making 4 more holes for the wheel axle to go through, I added two long skewers running through the ends of the car and attached milk carton lids at the tips of the skewers.

Hi Samik,
This was a solution I hadn't considered before and I have to ask: How well did it work?
I am impressed with the creativity here!
~Mr. Frengel

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By: Armaan Ahmed

My rubber band powered car was made out of straws, toothpicks, bottle caps, and rubber bands. First, I poked the toothpicks through the straws to connect both of the straws together. Then, I got a nail and poked holes in my 4 bottle caps. I then attached them to the toothpicks on the end. Some of the holes were too big inside of the bottle caps so I hot glued them together. Then, I cut a little pice of a toothpick and hot glued it to one of the toothpicks. I then linked a few Rainbow Loom rubber bands together. I tied one side of the rubber bands to the one toothpick that did not have a an extra stick attached to it and I rested the other side of the band on the little stick glued to the toothpick. Here is my finishing product.

Hi Armaan,
One of the things I love seeing is how similar problems develop similar solutions. You see this a lot in nature and evolution... so much so that people like to say "Form follows function" this is the second car that has used this type of design and stayed lightweight, thus using less force to move. It also looks like a top fuel dragster , which is undeniably cool. ~ Mr. Frengel

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I used parts from some LEGO sets and from the LEGO tin itself but not only does it move, it can use breaks like a real car, by pushing the two black LEGO pieces in the front to stop moving. (see pics below)

Hi there,
This is a nifty feature!  My question is this, can you set the distance it goes before it stops?  Try to figure it out as a next step!   Then set the distance for 4 feet, then 6.
~Mr. Frengel

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By: Drishti Nishar and Anika Giri

Our car had to be a little simple since we didn't have many supplies but we tried our best! It is made out straws, rubber bands, toothpicks, and bottle caps. When you pull the toothpick back, pulling the rubber band back, it pushes the car forward making it move. With this simple car, we put the formula F = ma to use. This car surprisingly took quite a few attempts to make, but in the end we were successful.

Anika and Drishti,,
This is great! Often in engineering the simplest solution is the best.  you've also stumbled onto something that auto engineers and aerospace engineers have to deal with everyday... weight. Your supplies are super lightweight, meaning it takes less force to get it moving. Some high performance cars are small and light ... and don't use large engines. ~Mr. Frengel

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This car is made out of legos that are in my home. My first attempt to make it was failure as it would not wind up. And I tried different ways but it would not wind. After an hour I figured the problem. So I changed the design. That is the best part about legos you can change the design. It is able to be winded up. I can't explain the problem but here is my finished product 👇🏾  - Abhi

Abhi, There is a rule of thumb in the maker community "If you can built it with legos, then you can prototype it anywhere."
You did a great job!
Mr. Frengel

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I made a mini go-cart from a cereal box, bottle caps, skewers, hot glue (I burned myself.)  and a rubber band. I actually made another cart a couple days ago, but that one didn't work out. Anyway, I cut up the cereal box, glued the bottle caps to skewers to create axle wheels, and attached it to the cardboard frame. I made a slingshot with the rubber band and more skewers (I forgot to add it to the picture) added decorations, and finished my design. -Ani

Ani~
Fantastic job! I love the hard work you put into it and the creative thinking. I recently built a toolbox with literally every other piece of material I had lying around my shop and it came out pretty nice. When you're willing to work with whatever you have lying around, interesting things happen.
Also, I'm digging the googly eyes.
~ Mr Frengel

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Post a picture of what you made and tell us a little about it.