ManiaPark had car skins. They went offline at the end of 2021 after a cyber attack.
The site is currently being created again from the ground up, but will contain much of the content of the original site. There's a chance the site could return before the end of 2022. But the devs are working on it in their spare time.
You can join the ManiaPark community on their
Discord server.
Learner Driver 
