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Can I substitute marshmallows for plastic caps for wheels?





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The activity can be viewed at: Build a Wind-Powered Car

Hello,
This is a great project! You can definitely experiment with different types of wheels, and marshmallows should work. However, keep in mind that marshmallows are squishier than plastic caps and might deform a bit if the car is too heavy. Even so, marshmallows should provide good traction and work for the wheels. If you have access to both marshmallows and plastic caps, you can test the distance and speed of each to see which works better.
Have fun with this project!