Remove possible welds from a part? (hit)

When a part touched another part (lava) all welds that are attached to the part get destroyed

example - an unanchored car hits a rock and the part that touched the rock falls of the car ( like in those old 2010 games )

the car is welded together so it doesn't fall apart.

v - the script ( lava part ) - v

script.Parent.Touched:Connect(function(hit)
local all = hit:FindFirstChild("Weld")
	all:Destroy()
end)

I could just make the part disappear with a script, but that's lame.

script.Parent.Touched:Connect(function(hit)
	local humanoid = hit.Parent:FindFirstChild("Humanoid")
	if humanoid ~= nil then
		return
	else
    local all = hit:FindFirstChildOfClass("Weld") or hit.Parent:FindFirstChildOfClass("Weld")
    repeat
    all = hit:FindFirstChildOfClass("Weld") or hit.Parent:FindFirstChildOfClass("Weld")
    if all then
        all:Destroy()
    end
    until all == nil
end
end)