According to zipline[1] it is still better than motorcycles at least. Considering we are talking about 100km, I would not consider a bicycle an option for such small packages.
That said for me delivering a package by bicycle+ train + bycycle is an option but it will always be more expensive unless you can stand long delivery times.
That said for me delivering a package by bicycle+ train + bycycle is an option but it will always be more expensive unless you can stand long delivery times.
[1] https://www.flyzipline.com/newsroom/stories/research-insight...