I read a neat article in the March 16th edition of the New York Times about future planning models for paris. The article is called "A New Paris, as Dreamed by Planners". You can google NYT's and put in urban planning paris or some yap and it comes it will likely come up in a search.
I am excited to see the plans for Paris. The photo in the article shows an elevated train going around the city following one of the main highways called the perepherique. With the addition of trying to use transport lines to connect
all the suburbs with the city in a more convienent fashion.
Best Regards, Christine V, Guyancourt France