They may not be “perpetual” perpetual motion machines but they seem that way. They run off of biofuel so I guess that means they are actually just regular machines. Biochines.
There is plenty of research, experimenting, prototyping and exploration around sources of alternative energy to produce electricity. I bet this source holds promise. At a minimum I bet you could light your house and maybe run your AC if you could figure out how to tap it. It runs on Cheerios, mac & cheese and ice cream.
