You can write your topic however you want, but you need to answer these questions:
What do you want to achieve? Keep it simple and clear!
I want to make this vehicle thing move around like the character.
What is the issue? Include screenshots / videos if possible!
The issue is that I don’t know how roblox moves the character based on the camera angle. Whenever you are moving forward the y axis rotation of the camera influences what the player moving forward is. How do I use the default roblox code for my system?
You could probably add a humanoid to the car model and then set player.Character to the car, this will make the car act exactly like the player character, while placing the player model in serverstorage for replacing back if needed afterwards. However, if you are making a driveable car then I’d recommend you to use physics constraints and vehicle seats rather than making it a character.