I was intrigued to see a small group of people in Victoria Park, East London, walking along next to a shiny new looking white bike. There was a woman on the bike, kind of riding it, but making very heavy weather of it. When I looked at the bike more closely (well, it didn't need to be that close, to be honest, as it was pretty obvious) I saw that the bike had no pedals. Just a sort of running board, like a scooter, or on the side of those wonderful old cars. This particular lady was having a lot of trouble making the bike go. I think the principle is that you sort of scoot using your feet on the ground, then glide along.
The big question is ... why? I wouldn't have thought you could pick up any speed, and wouldn't it be irritating to have to keep running along the ground? I'd be interested to know if anyone's tried one, or could throw some light on what advantage they could have over a "normal" bike. The company, Pusha, do have a website though I found it slightly imprenetrable and it froze after a few clicks.