I get a bit of a chuckle out of the I'll head for the hills types. What are you going to do when you get to the hills? Do you have seeds to plant to sustain yourself? Do you have food to eat for the two or more years it will take to clear land and harvest a crop? Do you have tools to clear the land that will be required to plant those crops or are you planning on getting into a deathmatch with the farming community to get to already arable land and equipment. Unfortunately I as well live in a city that is also surrounded by bridges and if there was some sort of a major cataclysm I'd likely be deader than Elvis.