That's a tough one to answer in an urban environment. Bugging out requires some preparation. Even getting down the stairs in a high rise could be a huge challenge for the elderly. A supply of cash is also a prerequisite for an urban/city bugout even if you have some where to go!

http://www.salon.com/2012/11/01/food_stamps_cant_buy_groceries_in_sandy_power_out/

News reports are indicating fuel shortages and very long queues of between 6-10 hrs wait times and even portable generators changing hand for $12,000

http://news.sky.com/story/1006072/sandy-fuel-crisis-grows-on-us-east-coast