How do I make this script filtering enabled?? Steps plz?

Hi, im a new scripter and I would appreciate you helping me make this script filtering enabled step by step, so i can disect it and learn. I have a car spawning GUI which lets you choose which car you want to spawn and select it. If you have over 10,000 money then it spawns the car clicked on to a location.

The Gui is working fine, and when I click the buy button it works (says error if i dont have 10,000), however the car doesnt spawn to the location from the workspace

Car spawning script:

local P = script.Parent
local player = P.Parent.Parent
local index = 1

local vehicles = {
--  {NAME                       , THUMBNAIL ID}
    {"Toyota Corolla 2010"  , 0}, --LEAVE ALL THUMBNAIL ID AS 0. THERE IS NO POINT FOR A PICTURE.
    {"Smart Fortwo" , 0},
    {"Sudiko Green Yoga"    , 0},
    {"Sudiko Blue Yoga" , 0},
    {"Toyota Prius 2010"    , 0},
    {"BMW i3"   , 0},
    {"TCI"  , 0},
    {"Toyota Prius 2016"        , 0}
}

wait(0.5)
-- GUI vars
local bg = P.BG

-- Helper function
function SetInformation(index)
    bg.I.Image = "http://www.roblox.com/thumbs/asset.ashx?assetId="..vehicles[index][2].."&x=420&y=420"
    bg.T.Text = vehicles[index][1]
end

local locked = false
bg.S.MouseButton1Click:connect(function()
    local Money = player.leaderstats:FindFirstChild("Money")
    if Money.Value > 9999 then
        Money.Value = Money.Value - 10000

    if (locked) then return end
    locked = true
    local vehicleName = player.Name.."Car"
    local model = workspace:FindFirstChild(vehicleName)
    if (model) then model:Destroy() end
    model = game.ServerStorage.Vehicles:FindFirstChild(vehicles[index][1]):Clone()
    model.Name = vehicleName
    model.Parent = game.Workspace
    model:MakeJoints()
    model:MoveTo(P.Regen.Value.Position)
    P:Destroy()
    locked = false  

    else
        script.Parent.BG.S.Text = "Not Enough Money, 10,000 Needed!"
        wait(3)
        script.Parent.BG.S.Text = "Select"
    end
end)

bg.B.MouseButton1Click:connect(function()
    index = index - 1
    if (index < 1) then index = #vehicles end
    SetInformation(index)
end)

bg.N.MouseButton1Click:connect(function()
    index = index + 1
    if (index > #vehicles) then index = 1 end
    SetInformation(index)
end)

bg.Q.MouseButton1Click:connect(function()
    P:Destroy()
end)

SetInformation(index)

This is a script in the serverstorage and the "vehicles" folder is in the server storage too

thanks for helping!!