Hey! We seen a balloon rocket car in a museum shop, I told my kids I can print one. After download some examples and print them, I understood they are not hot enough. I wanted the balloon - a red head - as a driver. my Idea of the driver is not completed yet, but the car self is already fine.
Maybe in the future I find a way to make the balloon pipe more elegant, and there are some troubles to stop the air before releasing the car. a valve or something like that.
UPDATE
I updated the car and the idea, the nozzle is in the car now and don't destroy the overall look of the car. And the best modification are the side pipes, they make the car even more hot :) and took the idea of the air output to the point. I didn't print it yet, but the g-code looks clean.
UPDATE
If you want to print, set the layer hight at the bottom of the car very low, otherwise there are maybe some holes. If you have some holes, fill them with glue, worked for me.
The author marked this model as their own original creation.