I have a case of 1 liter Costco water bottles in each of my cars (20 liters per case = 5 gallons). I also have a camelbak BOB as well in the cars.. the thought is to be able to survive and get back to the house.. If we really need to leave, I have all my real bug out stuff ready to load up and go in the garage.

For food, I have the mainstay rations.. I replace the rations and water every 6 months.