Hotrod Racer Balloon Car - No Glue version

The Hotrod Racer Balloon Car by Polly-Jeanius is very cool, but it requires you to use glue, and I'm not particularly eager to use glue. Therefore, I have remixed the model using slightly modified axles from my building kit to allow me to build the model without using glue at all! As a bit of a side-effect, it is now very easy to make multi-color wheels; just print axles and wheels in different colors. Additionally, I made small adjustments to make the fitting of a balloon easier (I broke a few balloons before I managed to fit them into the original version). It seems to work just as well as before. The price for not using any glue is that sometimes air can escape around the mouthpiece (exhaust), making the car less efficient. In such cases, It might help slightly scaling the exhaust up, or if it doesn't help, then it might be best to glue it in any way. Also, it is good to keep in mind that the price for easier balloon fit (smaller ballon hole diameter version) is a smaller hole diameter, which (especially with higher infill version) might limit the speed the car can reach. Thus, I have also included a model with the original balloon hole version if you want to make your balloon racer faster.