Sinclair A-Bike =============== I once owned this thing [1]. It was around 2008, I think. It was the second, updated model with larger (inflatable to 90 psi) wheels. If I remember correctly I was very unsatisfied with it - it wasn't as small as I expected and it was rather uncomfortable when carried in its dedicated backpack. But as a bike it was quite a disaster. It rode well only on ideally flat surfaces (like corridors in buildings). And I wasn't able to climb anything (there are no ideally level surfaces in the real world). The final problem was that one of plastic parts broke after a few weeks of use. So I sold it. I wasn't the only one who was unsatisfied with it. I was told that the bike was a sort of disaster. And now I have bought another one. The first model with ever smaller wheels. And I am rather satisfied with it. It really does not ride any better that the later model but now I know about its limits and I don't expect too much. References: [1] gopher://gopherpedia.com/0/A-bike