As city transportation goes, the bike is unparalleled—immune to traffic, never filled with urine, and much faster than walking. It has only onnnne major disadvantage—it ain't ideal in the rain. Even with fenders and a rain jacket, which are de rigueur for commuters, the experience in the rain is pretty unpleasant, unless it's a warm, loving rain and you have a fresh set of dry clothes waiting at the end of your ride.
As one German company knows, it might just be better to toss a roof on it. It's called Dryve.