It’s a worldwide online conversation (a chat room on steroids?) comprised of six forums, including one titled “Humanity, the Future of our Cities”. There’s also a forum on Environmental Sustainability. The Forums run December 1st-3rd. I think it will start late in the evening Thursday, Pacific Time.
While there is not a specific forum on transportation, I can’t imagine that the “Future of Cities” and “Sustainability” forums can ignore transportation. I intend to check it out, if only to see how the Internet is used in this way. They expect thousands of participants.