Good spot
@FlatSix911, those look to be
Scandinavian Side Bike Sidecar's caught in the wild. I looked into these for sandy beach missions for our little furry friends, and for bigger family-sized grocery hauling...I think it was EUR1,400 or so for the fiberglass, and EUR2,000 for the carbon fiber version, plus options, and shipping from Europe. Also considered the detachable
Argo Cargo Bike Kit, at a more affordable USD$1,150. When not in use, both required too much storage/garage space, that ultimately we didn't really have.
Horse Cycles Surfboard/SUP sidecar box was interesting (even if it was a one-off):
View attachment 83439
As is
KP Cyclery's EUR750 sidecar:
View attachment 83440 View attachment 83441
Xtracycle has/or had a smaller
fold-down rear rack mounted side car platform for USD$175 (out of stock currently)...not sure I'd trust to be going ebike speeds with any kind of heavy cargo:
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