WHY? Because motored vehicles are expensive and waiting for the lev can be tedious as fuck.
HOW WOULD THEY WORK? I envisioned them working as a piece of ‘clothing’ that you can equip like boots or a wheelchair. When you are using them you move faster than walking but it would depend on your agility stat. Also much like fighting or sneaking, you would get tired from moving on your human powered vehicle, which would depend on your stamina. You will get sweaty and dirty from riding it too much, obviously.
Also, you would be able to take the express way by making some kind of roll to avoid getting hit by motored vehicles, but it would be possible if slightly dangerous.
I think this is more than possible to code without too much hassle and the ability to have cheaper vehicles will allowed people to travel more easily between sectors which would in change provide more RP in general for all, instead of RPing waiting for the lev.
If you like this idea please speak up and suggest a couple of cool cyberpunk human-powered vehicles that come to mind. Thanks.