It sounds like you are describing a mechanic creeper, which is a low wheeled platform that mechanics use to easily slide under vehicles while working on them. These creepers are essential tools for auto mechanics, as they provide a comfortable and safe way to access hard-to-reach areas of a vehicle.
If you are experiencing clipping issues with your mechanic creeper, you may want to check if there are any loose or missing screws or bolts that need to be tightened. Additionally, inspect the wheels to ensure they are moving freely and not getting caught on anything.
While it's great to address any issues with your mechanic creeper to ensure its functionality, it's also important to remember that roleplaying with tools and equipment like this can be a fun and engaging way to enhance the overall experience. Whether you're using it for actual vehicle maintenance or for immersive roleplay scenarios, a mechanic creeper can add a level of realism and authenticity to your activities.