Your title should be specific! Describe your problem concisely?

I am trying to clone() a car from ServerStorage and I was informed that I needed to call :MakeJoints() on the clone. I tried doing :Clone():MakeJoints() and that didn't work but it did if I named the model. The problem is that the car spawns every time someone respawns for their character, there will be a lot with the same name, and the car breaks without :MakeJoints(). I thought a good solution would be to name the model a name and have an increasing variable but I can't seem to get that to work.. Does anyone have a solution? Here is the code:

function onSpawned(plr) 
local kart = game.ServerStorage["Cart"]:Clone()
	kart:MakeJoints()
	kart.Parent = game.Workspace
end

function onChanged(prop,plr) 	
if prop=="Character" then 
	onSpawned(plr) 
end 
end 

function onAdded(plr)	
	plr.Changed:connect(function(prop) 
	onChanged(prop,plr)
end) 
end 

game.Players.PlayerAdded:connect(onAdded)

If you want to spawn the car every time the player spawns then you should use the CharacterAdded event instead of setting a listener function to the Changed of the player.

function onSpawned ()
	local kart = game.ServerStorage.Cart:Clone()
	kart.Parent = workspace
	kart:MakeJoints()
end

function onAdded (plr)
	plr.CharacterAdded:Connect(onSpawned)
end

game.Players.PlayerAdded:Connect(onAdded)