SimCity's latest developer diary video shows off a few of the new mechanics that Maxis is injecting into its decade-old franchise; specifically, the different attributes which neighboring cities will share with one another.
The video showcases the GlassBox-powered user interface for managing your connections with cities, which shows a detailed look at what you're sharing and receiving with nearby burghs. Extra power can be given to friends, or sold at a premium. Less savory elements, such as criminals and pollution, will also move through your town's porous membrane to plague your friends' cities too, which they likely won't appreciate as much.
Check out the video for more helpful information, including tips like: Don't build your infrastructure in the shape of a guitar, as rad as that may be.