Hi Stadjer

Again thanks for the thoughtful reply. Apologies, there were several autocorrection in my last post that messed up some of the meaning, but I think you understood.

I've never seen a compact bike like that, it looks pretty nimble. Do you notice any difference with a solid/cast wheel versus a traditional wire spoked one? How much do you ride it? 10km, 5 times a week?

Yes, I imagined people would need a test ride, or loan to be convinced. Valid concerns on dirt/dents rendering any of those designs I posted unusable. "Is a foldable big wheel better than a solid small wheel?" - That is the question.

Very cool that you designed a bike, and I like your focus on the use, not a headline figure of size or weight. Is that picture of a train in the Netherlands?
Re. non-air tyres. They are a compromise. I've read some long term reviews that point out pro's and con's. I've tried Tannus for a short spell and I think they have their applications. The rent-a-bike companies have switched to non-air tyres such as nexo without too many complaints (or I missed them). Most people that knock non-air tyres seem not to have tried them, or be a different market.
Thanks for the thoughts, very helpful.
Enjoy your day!