True, but if you see the number of people cycling to and from work in London at the same time, I think pods could form relatively naturally along the way, with

True, but if you see the number of people cycling to and from work in London at the same time, I think pods could form relatively naturally along the way, with people joining and leaving where necessary. The more people found out about it the easier it would be, but it's difficult to know where the threshold is that means it would start to click, and what it would take to get to that point. Hence why it's still an idea in my head!