All folding cycles involve compromises, and the Traincle seems to have given weight the highest priority. In my view this has been taken too far in terms of the negative effect on other aspects of the design. While the bike is exceptionally light, folding is slow and the resultant package is not particularly easy to handle. The single gear and 12 inch tyres limits its suitability for much more than short trips to and from the station etc. However, as with all bikes, it can certainly do longer journeys - with Paul Stobbs riding, the machine kept up a very good speed on the road and coped very well with loose gravel on a cycle track, but I would put that down to the rider. Riders of above medium height are not likely to find the seat adjustment and riding position satisfactory. Light weight is certainly important in a folder when you are carrying it, but if folding is sufficiently easy then carrying the bike can be minimised - roll it on its own wheels as much as possible. I would rate the Brompton a far better folding cycle in every respect except weight, and the ease of folding of the Brompton means that it does not have to be carried often, and when it is, then the shape of the folded bike compensates to some degree for the weight - and of course a Brompton is cheaper than a titanium Traincle. If weight is a major factor, then remember that a Pashley/Brilliant Bicycles Micro in single speed form without mudguards (which is comparable therefore with the Traincle) is 21 pounds in standard form, and could probably be made a bit lighter still by component substitution, at a much lower price.