Wow, that city space is really really small.
That was my immediate reaction as well. To those who have actually played the game, does it seem like it'll be an issue? Are there ways to get more land?
I tend to build slowly when I play Sim City games, so I wasn't ever able to fill the map up in the 1hr allotted time, but that's just me. According to the devs, the map size is about the same size as the medium maps from SimCity 4.
I could pretty much fill the map in the hour allotted but I think the depth from this game is going to be min maxing your city's planing what you want each city to be then sticking to the plan through out the game. Then once you have finished that start another city in the region to compliment that city fulling the holes that the city does not have. Then rinse and repeat until your region is running like a well oiled machine.