Cool idea! Quite innovative and also fits the theme.
Nice graphics! How did you make them? And also nice music that adds to the atmosphere!
I played 3 levels here on itch.io and also on the link with the bug fixed. In the version on the link I was able to finish this level, but then it gets cyclic on the last 3rd level - I think that's all the levels?
It would also be cool to be able to turn the music on/off.
I think it would be interesting to have not only cars, but also pedestrians, it would be interesting to see how they would fall without balance :D. Or maybe passengers who can be put in a smaller car, for example, to balance a larger car without passengers :).
It was fun, congratulations!