Although these boats are to be used for research it would be fascinating to make a similar ocean robot which specializes in herding ocean trash and collecting it for recycling.

Another article from the same site (http://www.fastcoexist.com/1678872/methods-plastic-madness-o...) is about the ocean trash problem and a startup whose goal is to process low quality, sun brittled plastics such as those in the Pacific Ocean trash patch.

But the article makes the very valid point that gathering plastics from the ocean is a labor intensive effort. It would be cool to see a combination of autonomous robots such as these that could herd floating plastic trash and take it back to base stations for collection and recycling.