Is there a 0ad 28 version

Do you have a mod that adds the car? Maybe you could make a garage structure, and maybe the car could be a one time use battering ram

https://getartcraft.com/apps/photocraft   there are several tools for artists. https://app.getartcraft.com/create-object Yesterday, a YouTube video popped up recommending this free tool, which is also available on Linux/Windows/MaC OS and is open source. I get succesful download.

Another minor update for post-Atlas in version 1.11.1 addressing Main changes:  Fix: A game's public.zip chosen by name is taken as meaning the folder that holds it, especially on snap distribution  Fix: Lighter little pictures in the Replace dialogs, the enlarged picture and the changes window. New: Adding "some" campaign map testing post-atlas-1.11.1.zip CHANGELOG.md