So i want to post a mod of mine, but automation is so annoying, that i keep getting .car files, and not the requiered automation file. Thanks to that, some of my mods didnt get approved.
Oh wait seems I was wrong, your problem is another thing. To have a .zip file instead of a .car file, when you finished making your car, click at "export to another car" button instead of "save .car file" button. Btw, the "export to another car" has this icon: (With a red background)