How do I fire a RemoteEvent to spawn a specific vehicle that was clicked?

Hello! So today I figured out a script that spawns a vehicle from a folder of vehicles you own, except the only problem is that it's Local-Sided. How would I fire a RemoteEvent from a script to spawn it if it needs specific information? I tried but it keeps saying "Argument 1 is missing or nil". The script creates textbuttons in a GUI and they spawn a vehicle once clicked. This is in a LocalScript in the gui. I'm just confused on how I would give the remote event the information.

This is my attempt at using the RemoteEvent on line 49-

Here's the Local-Script

-- Vehicles

local player = game.Players.LocalPlayer
local character = player.Character
local cars = {}
local buttons2 = {}

local spawncar = game.ReplicatedStorage.Remotes.Vehicle.AddCar
local deletecar = game.ReplicatedStorage.Remotes.Vehicle.DestroyCar

local location = game.Players.LocalPlayer:WaitForChild("items"):WaitForChild("Vehicles")
function search(location)
	for i,v in pairs(location:GetChildren()) do -- Find all item in a specific location
		if v:isA("Model") then
			table.insert(cars,v) -- We're going to put all the vehicles found in a table.
		end
	end
end

function refresh()
	for i,v in pairs(buttons2) do -- Finds all cars in the table
		v:Destroy() -- Destroys them
	end
	
	local location = script.Parent.Handler2.Location
	local selected = script.Parent.Handler2.Selected

	
	for i,v in pairs(cars) do
		local button = script.Sample:Clone()
		button.Name = v.Name
		button.LayoutOrder = i
		button.Parent = script.Parent.Handler2
		--button.Image = v.TextureId
		table.insert(buttons2,button) 
		
		button.MouseButton1Click:Connect(function()

		local cl0ne = v:Clone()
		cl0ne.Name = player.Name.."'s Car"
			
			if workspace:FindFirstChild(player.Name.."'s Car") ~= true then -- if false
			if selected.Value == nil or selected.Value ~= v and location.Value ~= workspace or location.Value == nil then
					
					spawncar:FireServer() -- Fire the remote event
					
					
					location.Value = v.Parent
					selected.Value = v 
					
					
			else
					if workspace:FindFirstChild(player.Name.."'s Car") ~= nil then -- if true
						
						for _, Model in pairs(workspace:GetChildren()) do
   						 if Model.Name == (player.Name.."'s Car") then
							Model:Destroy()
					print("Despawning Successful")
					selected.Value = nil
					location.Value = nil
					
					-- spawn car
					-- delete car
					
					end
					end
					end
					end
			end
		end)
	end
end		



function backpackRefresh()
	cars = {}
	search(character)
	search(player.items.Vehicles)
	refresh()
end

backpackRefresh()

player.items.Vehicles.ChildAdded:Connect(backpackRefresh)
player.items.Vehicles.ChildRemoved:Connect(backpackRefresh)

character.ChildAdded:Connect(backpackRefresh)
character.ChildRemoved:Connect(backpackRefresh)

The regular script in ServerScriptService:

game.ReplicatedStorage.Remotes.Vehicle.AddCar.OnServerEvent:Connect(function(player,carName)
	local vehicle = player:FindFirstChild("items"):FindFirstChild("Vehicles"):FindFirstChild(carName):Clone()
	vehicle.Parent = workspace
	vehicle:SetPrimaryPartCFrame(player.Character.HumanoidRootPart.CFrame + Vector3.new(0,5,0))
	vehicle:MakeJoints()
end)