I had a Strida in London. It seemed like one of the best-designed folding bikes around: kevlar belt (instead of a greasy chain), folding and unfolding an A-fra

I had a Strida in London. It seemed like one of the best-designed folding bikes around: kevlar belt (instead of a greasy chain), folding and unfolding an A-frame bike took literally 10 seconds. But here's the catch: the tires are all really small, so it's much trickier to balance, and it's much less comfortable than a full-size bike.