Do you think this teleport script is going to work or is it valid?

Hi I was making a racing game on ROBLOX. Is the following teleport script valid or at least work? I was not too sure if it was going to work? It needs to be R6 and R15 capable.

Script:

function teleportPlayers(target)
    for _, player in pairs(game.Players:GetChildren())do
        while player.Character == nil do
            wait()
        end
        local character = player.Character
        local torso = character:WaitForChild("UpperTorso")or("Torso")
        torso.CFrame = target.CFrame
    end
end