It's a little known fact that 90% of folding bikes that are sold are rarely or ever actually folded, they are bought by people who want a "shopping" type bike and most of the bikes that fit that bill that are on sale today happen to fold, in one sense or another. Italy for example has whole legions of their ubiquitous Bianchi U frame folders and such like that all have the hinge rusted shut, having been bought because they are small, ie not full size, with an open frame and easy for everyone in the family to ride. I'm sure the same is also true for the majority of the 10's or 100's of 1,000's cooking model Dahons that are sold round the world. It's only us obsessives who actually fold their folding bikes.