This is my solution to rainy days in North Rhine-Westphalia. This cell cost about 80 Euros, including bike racks. But I paid more because of some wrong calculations. Damn you Math! or Geometry? I would have paid even more if my wife hadn’t helped me :)
It is really comfortable to ride. The visibility is not bad, even when it’s raining. A really heavy wind may be a problem but haven’t tried it on a very windy day. Just a bit shameful when all people turn and look at you. This is the only disadvantage.
Let’s name this: “civilisation created with zipties" or "mit den Kabelbinder geschaffene Zivilization"