local part = script.Parent

local dir = 1

while true do

    part.Position = part.Position + Vector3.new(1*dir,0,0)

    wait(.1)

    if (part.Position.X > 100) then 

        dir = -1

    end

    if (part.Position.X < -100) then

        dir = 1

    end

end

local part = script.Parent

local dir = 1

local stopTime = 1

local distance = 1

while true do

    part.Position = part.Position + Vector3.new(distance*dir,0,0)

    wait(stopTime)

    stopTime = stopTime + 1

    if (part.Position.X > 100) then 

        dir = -1

    end

    if (part.Position.X < -0.1) then

        dir = 1

    end

end