>>1979755there are better looking folding bikes but none of them are more functional.
bi-fold bikes like a tern or dahon have to be carried and are not as small, and are also unwieldy to fold and unfold. i've only ever seen one other trifold that wasn't a straight up brompton clone, and while impressive it was still missing many features that make a brompton as useful as it is (rack, roller wheels, front carrier that works when folded, etc.)
furthermore the size of the brompton makes up for all of the other compromises. it easily fits in a car trunk even if the trunk is not empty. it will fit between or under seats on a bus. you can carry it onto an airplane even. the only bikes that even come close to this are basically folding scooters with tiny scooter tires and not bikes, or look even crazier like the kwiggle.
