Did a quick photoshop mod. Could be my next paintjob.
In Italy it is legal to drive the Zommer with a second passenger!
OneFun has next to some other Zoomer-parts that backrest pictured above,
which can be pushed down into a passenger seat. (Like the big ruckus seat).
Goes for 160.50 Euro.
The Swiss Postman with a Zoomer and a Trailer seems to be close.
The Trailers name is called "ZOBU" and is made specially for the Zoomer/Ruckus.
It carries 55kg, and weights itself 27kg. Available in Black, Red and Yellow for around 1390.- CHF.
Thanks Marco for the infos.
Schlank und Rank