How do I make the camera always face the back of the player?

So I am making a racing game, and the make it more advanced, I want to make it so the camera always faces the back of the player, and the player can't zoom in or out. How do I achieve this?

The methods of CFrames sound pretty handy in this case..

assuming you have access to the player's character, here's a method that might hopefully work

local RunService = game:GetService("RunService");

local camera  = x.y.Camera--the camera object
local character = x.y.Character --the player's character

RunService.Stepped:Connect(function()
	camera.CameraType = Enum.CameraType.Scriptable
	local head = character.Head;
	
	local behind = head.CFrame:ToWorldSpace(CFrame.new(0, 0, 10));
	camera.CFrame = CFrame.new(head.Position, behind.Position)
end)