Hey Thoof, first of all, thanks for playing the game! I really appreciate it. I'm sorry the game had loose ends i didn't manage to handle with the amount of time i could give to the jam.
Now that you mentioned it, the cars do look like sheeps without any textures or even colours like you mentioned slapped onto it and for the "de-spawning" of those cars, i totally overlooked that on my part, my bad!
I'm fairly new to unreal engine as well and i'm sure i messed up along the ways in terms of the file size. I probably included extra engine content that could've been excluded during the package. I'll be sure to look up on the proper way to package before i enter my next jam!