How do I reference the player from a server script?

So this script works when I test on the client, but not in a server. I know it's because I'm trying to reference the player, but I'm not sure how I should be doing it from a server script.

function teleport()
	local target 
	for i, player in ipairs(game.Players:GetChildren()) do
		if player.Playing.Value == 0 then
			local char = player.Character or player.CharacterAdded:Wait()
			if char.Humanoid.Health ~= 0 and char:FindFirstChild("Choice") then -- "Choice" from vehicle select gui local script
				print("Choice")
				-- ADD CARS HERE. Probably a more efficient way to do this
				if char.Choice.Value == "Car1" then
					local Car1 = game.ServerStorage.Car1:Clone()
					Car1.Parent = game.Workspace
					target = Car1.PrimaryPart.CFrame
					char.HumanoidRootPart.CFrame = target
					player.Playing.Value = 1
				end
			else if char.Choice.Value == "Car2" then
				-- etc
				end
			end
		end
	end
end