Re: The best urban transport
"You get cold & wet walking to your car or waiting for a bus."
That's why they invented parasols. At least you can use one en route to the car or while standing at the bus stop. Once you're inside, though, you're in an encapsulated vehicle that keeps you dry. Cycles are open-air and not well-suited for inclement weather.
Manual bicycles are also ill-advised for areas that are full of uneven terrain. Hilly San Francisco springs to mind, as does a place I know nearby that's in the Appalachian foothills.
Perhaps what's needed is an encapsulated bicycle with optional motor a la a Derny. This would be the most versatile kind of vehicle: no wider than a bicycle, protects from bad weather, and optional external power in case of uphill climbs or other tricky terrain.
Then again, there's still the matter of large shopping trips. How will we get our stuff (too much for the bike) home without having to do a boomerang trip with a vehicle rental?