For some reason, this GUI opener isn't working. This is a localscript. Nothing is appearing at all. No errors? This is making me really mad.
local clickdetector = game.Workspace.SELECT.ClickDetector
clickdetector.MouseClick:Connect(function()
game.Players.LocalPlayer:WaitForChild('PlayerGui').SpawnCar.Enabled = true
end)

1 comment
(Just a comment and advice) The MouseClick event passes the parameter or the player so you don't need to get the local player. I would also recomend you write this in a script instead of a LocalScript.