Why does this script work in studio but not when published. Cars don't spawn?

When the character walks onto a block the following code should trigger. In studio it works, but when published it does not.

local cop = "Cop"

local copCars = {"Car Chassis", "1992 WVD Masamune 3.2 GT"}
local cars = {"'54 Caddy", "2015 BMW 435i", "G500", "KZ Converge", "Q7", "Wrangler Rubicon"}

function spawnVehicle()
    local player = game.Players.LocalPlayer
    local car = ""

    if player.hasVehicle.Value == 1 then
        print("Player already has car")
    else
        print ("player does not have car")
        player.hasVehicle.Value = 1
        if player.TeamColor == game.Teams[cop].TeamColor then
            car = copCars[math.random(1,#copCars)]
        else
            car = cars[math.random(1, #cars)]
        end

        print(car.. " was randomly choosen")

        local model = game.ServerStorage[car]:clone()
        model.Parent = game.Workspace
        model:MakeJoints()
        model:MoveTo(script.Parent.Parent.Position)

        waitForNextCar(player)
    end
end

function waitForNextCar(player)
    local i = 1
    while i < 10 do
        wait(1)
        i = i + 1
    end

    player.hasVehicle.Value = 0
end

function onHit(hit)
    if hit.Parent:WaitForChild("Humanoid") then
        spawnVehicle()
    end 
end

script.Parent.Touched:connect(onHit)