This fork supports Blender 4.0+ and consolidates fixes from the community while the maintainer is absent.
Upstream readme description below.
Rigacar is a free addon for Blender. It is designed to fulfill the following goals:
- generate a complete rig as quickly as possible (actually few seconds) for standard car models
- provide tools to automate wheels animation
- allow efficient animation baking to be able to export animated models into real time renderers
Please read full documentation on my website.
You can also watch the series of video tutorials: