I've got an old "Charger" electric bike from Aero Vironment. Its best feature is the power control. You set it for a given level of boost, and just pedal normally. Up to the limits of the system, it just amplifies your effort. So you feel like Bionic Man, instead of a frustrated fellow cranking on a feeble twist grip. Pedaling at a comfortable effort feels better than just sitting there, with options to improve health without gym time, provides central heating, and makes the rig look normal.
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There is no excuse for a land vehicle to weigh more than its average payload.
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