bool = engineFreeModel(id)
https://github.com/multitheftauto/mtasa-blue/commit/34d4eed068f9c957d977044e8c7fd36e087ff09a
Note: reverted in https://github.com/multitheftauto/mtasa-blue/commit/242684e5a17e78cd6f7ac36ba362836114b51671