i spoke with peter theil in riyadh. what we been talking about what his highness is doing that will be in this new city of the future. where do you see the opportunities in terms of starting from scratch. when you have a city, what kind of technologies will be most of needed? >> it's -- there is a tremendous amount one can do when one starts something new from scratch. one thing that's striking about the great cities of the world like london, new york, silicon valley, many other places, is that even though they are incredibly dynamic economic places, it's extremely hard to change things. so in new york city it costs a billion dollars to build one mile of subway. in san francisco you can't built new highways or anything new. the transportation grid is set. so there is this weird transportation problem with the big cities where in effect becomes incredibly hard to build new transportation once the basic city has been built if the transportation systems are inadequate. i would say they are badly inadequate in all of our ma