Well, if you believe everything you read on the internet. According to the Guardian, Coffee is next in line as biofuel source: 

Coffee grounds — currently wasted or used as garden compost — could become a cheap and environmentally friendly source of biodiesel and fuel pellets….. Scientists at the US-based University of Nevada, Reno, used an inexpensive process to extract oil from the leftovers of making espressos, cappuccinos and other coffee preparations from a multinational coffeehouse chain.

Great, now I need to watch for the coffee machine and thieves.

After Dutch holey cheese, there now is a Dutch font with holes as well.

Is it a gimmick or a genuine attempt to change the environment? Will we see other manufacturers adding “holes” to improve energy consumption and go green? 

I like the marketing advantages, not to mention the “in the press” section:

It is not possible for us to keep up with all publications about the Ecofont. If you happen to read an (English written) publication about the Ecofont, please let us know. Thanks in advance. 

See more here: http://www.ecofont.eu/ecofont_en.html