ah just watched the videos... so so... considering they put mentos in it... means the bottle looses all teh fizz though so it wasn't really much better than when we'd shake them up/drag them along fences/play foot ball with the bottle for ages first....

Good thing about dirty cheap pop is that its full of air so you don't get as much drink as you'd think
edit: ^that by itself sounds stupid... more compressed air = more pressure.