Almost hidden in a Nerdular Nerdance article about new Fire Prevention technology:
Voltree Power in Canton, Massachusetts, has developed a shoebox-sized sensor that, planted one per acre, could gather micro-climate information, such as spikes in temperature and drops in humidity, that signal a nascent forest fire. In April the Forest Service began field-testing the device, which can run for a decade on voltage generated from the pH imbalance between a tree and soil.
Soil powered batteries? Awesome.
I can picture the future now… legions of new Toyota Piouses with big platforms on the back holding trees… The tree car! I love it. You may even be able to make your carbon footprint negative with the new tree car!
Well, maybe not so much.
But a soil powered battery is an awesome invention. Bravo Voltree Power.
Now how about a potato powered Pious? That would be even awesomer.
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Uh, I think it only works because the sensor takes VERY little power to run, as oppposed to a car. But, re: your new tree-car design, I like where your head is at from a design standpoint.