
Here's an interesting concept: a fuel cell powered vacuum cleaner backpack.
I like the idea as cleaning the house gets really annoying when you have to keep dragging the power cord from room to room plugging in unplugging ad-infinitum.
The backpack part of it is a bit weird though: a single shoulder strap holding up a rapidly spinning motor, ethanol fuel cells, and a pile of dirt sounds like a recipe for back pain.









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