[rkagerer]

Question: Why the trolley? Was it an afterthought, or was it not possible to make the bike wheel(s) perform that function when folded?

[MrKwiggle]

Good question: The trolley mode needs two features: Rolls and handle. The distance between both should be up to 1 meter. We couldn't use simultaneously the handlebar as handle and the wheels as rolls for the trolley.SO we decided to use the adjustable handlebar as handle and put extra rolls for more trolley comfort. Compactness means short measures all over and that requieres extra rolls.