Yep I like the sound of these pop up circuits and agree they could be a huge publicity draw for the sport.
I can see it being a law enforcement nightmare but it would be cool to see Paris and London city centre become race tracks for the day. Congestion / pollution charges out the window big time I guess!
Lol. It would be a massive tourism boost for whoever was hosting for sure. If it was going to cost a city $20 million they would definitely make it back in the extra taxes over the three days. Who knows maybe they will drop the price of hosting the event to help grow the sport.