Seat:Sit() won't actually seat the player, it teleports them to the seat but they cant drive?

Below is part of my round system, this is just the part for seating all the players in their cars, but it wont work, not sure why.

for i=1,12 do
		local plr = plrs[i]
		if plr ~= nil then
			local char = plr.Character
			local n_car = game.Lighting.Car_d:Clone()
			n_car.Seat.MaxSpeed = 0
			n_car.Parent = workspace
			n_car:SetPrimaryPartCFrame(spawns[i].CFrame)
			
			n_car.Seat:Sit(plr.Character.Humanoid)
			
		end
		wait(1/12)
	end