In my favorite London coffee – bike combi Look mom no hands I spotted this remarkable folding bike: the Hummingbird. In the single speed version (for one reason or the other I like single speeded folding bikes) this one just weights 6,9 kg. According to the site the bike folds in under 5 seconds. One detail I also like about this carbon framed cycle is (not the carbon!) the attention to the quality of the wheels… Prices start at £ 3495.