This is a pretty cool take on a bike! Sometimes innovation happens with the very material that makes up an existing, well known item and that's the case here. The market for recyclable materials is unfortunately not as big as it could be and this is a way to help put recycled materials to use for a useful product; the wheels being hard to deflate is a compelling use case as to why even buy this in the first place.

I do wonder if this is suitable for use on say rougher hiking roads or if it should mostly be used in urban, paved areas, seems like the latter is safer