Bicycle trailer for a standing passenger? Have you seen a bicycle trailer for a standing passenger?
I came across the following image on Pinterest but cannot locate the source.
https://www.pinterest.com/pin/453737731186785705/
Appears to be asian based on the rider/passenger, and that pintrest links it to arrow-yokohama.no-blog.jp  but that website no longer exists.

The wayback machine gives us this link to 2013. 
  https://web.archive.org/web/20130809133057/http://arrow-yokohama.no-blog.jp/  


Store Name: "ARROW's bicycles and classics"
Store Owner: Kazuto Kobayashi ( Roundabout / OUTBOUND shopkeeper
Store Location: Kichijōji, a Neighborhood in Musashino, Japan


There was a youtube link to  https://www.youtube.com/watch?v=lt75V_C5JOI  but that account has been deleted.

I've also found this alternative image: 
 

and a reverse image search on that returns https://sumally.com/p/437518

The bike's name is  ARROW CC Rider and that matches the maker's name "arrow"

  36,750 Y is around $350 USD in 2020.




  Product description
  The person in the back grabs the handle and stands on the step.
  Light and comfortable standing (riding) comfort. You can also use it as a shopping cart by attaching a basket.
  Please ride cool as a new play tool for the outdoors.
  (General public roads can also be run.)




In my opinion it won't go fast, and steering will be compromised because you can't lean the bike very much.   It looks like a bigger version of riding a BMX with a passenger on the pegs, a`la: