Rivella is the second most drank soft-drink in Switzerland (and the by far most drank in our office :) ) and celebrates its 50th birthday this year. To honour this, today's NZZ published a little article about the history of Rivella (in german). Quite interesting and presumably not wide spread known for such a omnipresent company.
And if you never tasted Rivella, try it next time you're in Switzerland. It's different, but really good.