Stuttgart Aerospace designs that go back to 2015 published on www.evtol.news in 2020:

https://evtol.news/stuttgart-aerospace-apollo

https://evtol.news/stuttgart-aerospace-eolos

https://evtol.news/stuttgart-aerospace-eolos-1

https://evtol.news/stuttgart-aerospace-eolos-model-2

https://evtol.news/stuttgart-aerospace-parmenion

https://evtol.news/stuttgart-aerospace-ems

https://evtol.news/stuttgart-aerospace-fire-department

https://evtol.news/stuttgart-aerospace-cargo-box