I like that Lift Buddy (slide 4)--we could use a modified version around here. I wish firewood hauling tool makers would integrate the lift function into their products. Aside from log bags, they make wheelbarrow-like devices something like this, but those are worthless on anything but flat surfaces, and tough to control even there. Incorporating this could at least help loading and unloading at both ends.
It won't be too much longer and hardware design, as we used to know it, will be remembered alongside the slide rule and the Karnaugh map. You will need to move beyond those familiar bits and bytes into the new world of software centric design.
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