Originally Posted by
Rail
Yet someone else on the other side of the world or on the next street over is forced to make this same trip by bicycle and wishes he had a machine to do it.
A *motorized* machine, you mean?
Am I exploring a different question? What equipment/weight would be reasonable to you if the bicycle was the ONLY transportation available to you? Maybe it's the same answer.
If it's your only option, then whatever weight you *can* get is sufficient, by definition, and I believe that's around the weight where those Dutch bikes and Flying Pigeons come in at (20 kilo single speeds).