The successful Israeli drinks-maker SodaStream saves the customer hundreds of plastic bottles every year. SodaStream made a very clever advertisement, which the UK regulators banned for “denigrating plastic bottle makers”. You can see both the original ad and its replacement here.
http://www.youtube.com/watch?v=tE9U4mMqKP4
http://www.thedrum.com/news/2012/11/29/sodastream-releases-bubble-blackout-nterim-advert-inviting-viewers-clearcast-banned