We wanted a simple design more focused on the ability to move instead of making it flashy and not durable. At first we chose to use citric acid and baking soda but it didn't seem to work as the calculations were off. Then we tried magnesium, sulfuric acid and water but that failed. We all then decided that baking soda and vinegar would be the easiest option and save us time so we went with that.

Our onshape design was a simple, easy to make design. We used 3D printed wheels, and a balsa wood body. We also equipped our tank and car with Velcro, and used graphite to reduce friction on our axles.

We 3D printed the wheels that we made from our onshape design and got a piece of balsa wood (a very light wood) and cut it down to size to make up the body of our car.

Our first car design did not work and we had a lot of trouble trying to glue and put it all together so we came up with a completely different design. We had problems with getting our wheels to turn smooth enough for our car to move. We solved this problem by using graphite and sanding our axle. We also trimmed our car down in order for the car to move further as we thought the extra weight would be a problem. We also switched from regular wood to balsa wood in order to make our car lighter.

During the final competition we tried to put the baking soda in a piece of paper then put it in the tank which ended up failing. The first run the car went two feet due to the mistake. When we got back to the class we came to the conclusion that the idea was not the best so we just put the baking soda in the tank without the paper. The second run the car went six feet without an extra push which was a good increase from the first run .