why wont this script work for each player?

game.Players.PlayerAdded:connect(function(p)
local event = Instance.new("RemoteEvent") 
event.Parent = p
event.Name = "MyServerEvent" 
event.OnServerEvent:connect(function(player)
    local human = player.Character:FindFirstChild("Humanoid")
    local model = player.PlayerGui:FindFirstChild("VehicleGui").Model.Value
    local car = player.PlayerGui:FindFirstChild("VehicleGui").Car.Value
    if human:FindFirstChild(model) ~= nil then
        print("Human Found!")
        if human:FindFirstChild(model):FindFirstChild(car) ~= nil then
            print("Car Found!")
            local body = human:FindFirstChild(model):FindFirstChild(car):GetChildren()
            for i,v in pairs (body) do
                if v.Name == "Seat" then
                    v.Disabled = true
                    player.PlayerGui:FindFirstChild("VehicleGui").Open.Visible = true
                    player.PlayerGui:FindFirstChild("VehicleGui").Lock.Visible = false
                    print("Done!")
                end
            end
        end
    end
end)
end)

the remove even works on roblox single player studio and when i do 2 player roblox studio it only works for the server not for the players. so the Seat is disabled on the server but not for the players. why? please help this code is in a server script. the code that fires this is local script