In July 2013, a task force set up by the Mayor of London Boris Johnson proposed that long sections of the North Circular (as well as the South Circular) should be put underground in road tunnels, freeing up space on the surface to provide public space, extensive cycle routes, and better links to existing communities currently severed by the road. Caroline Pidgeon, deputy chair of the London Assembly's Transport Committee, responded, "It doesn't make sense and it won't add up – a £30bn estimate, but I'm sure it'll cost at least double that, and the reality is we'll lose homes around these roads and so on."