Fully rigged model of a Lego Buggy car, included :

• Independent rigged suspension system
• Independent rigged shocks absorber
• Rigged transmission
• Rigged steering system
• Animation controleur for body, independent wheels, independent wheels height (bump animation), drift, root
• Automatic ground detection/follow ready
• Automatic wheels speed ready (require creation of a Blender Driver/Follow path constraint)

Enjoy !

Introduction with some instructions here :