So you want to use this for some race or something else right? you try to drive the car and it doesn't work well gm_construct13_beta is probably why it isn't working because if you see in the console that there is an error that says "gm13 sent fire to constraint" i recommend disabling it or if you want uninstall it

Edit:the reason why the message appears is because the map creator made it compatible with other maps i dont know which ones but i do know gm_construct(normal) and gm_flatgrass are compatible