well you use plastic because glass will reflect, and the coca cola ad the most like lie forgot to remove it.
but yes it is fake because when you get over 100.000 fps you need to turn to black and white because coler is way to much work for the prosesor to get this frame rate in coler you need an epic amount of ram
and if you use a coca cola bottel you need to pin point your lazer, because to bottem of a coca cola bottle inst nice and round