Bikes and Bike Designs

Moon lander style :) I'd rather not to buy for myself, but it can be useful for small commercial vechicles, like movable coffee- and hotdog-kiosks on wheels.

interesting ideas, could the last design be a sidecar for an existing bike?

Why not?

Also a nice one, link to grabcad: Open Source Cargo Bike

or website:

https://veit-penzenstadler.de/frachtstueck/

Grabcad model

Cargo bike

Bullitt frame kit best cargo bike on market rear 26" front 20"

Bullitt frame kit

Not a DIY, but a compact version cargo bike:

Tilting Cargo eBike for DIY project

https://grabcad.com/library/tilting-cargo-ebike-xc-1

YouTube: Two-wheeler Inventions

Yes that is really cool bike