Do not let the gas tank in your car go below the half full mark so you will have enough gas to get home. Store a minimum of 130 gallons of gasoline. 70 gallons to use in the generator 20 gallons to pour in your vehicle before bugging out and take 60 gallons with you on the trailer to drive out of the affected area and beyond to a city where you can find a job or have relatives. I recommend having two 5 gallon cans of diesel fuel to trade with a farmer for food.
Store a lots of small propane tanks that run heaters and cook stoves. Store several 30 pound propane tanks that run grills, outside bullet heaters and inside vent less fire places and wall heaters.
Also stock break fluid, antifreeze, motor oil and transmission fluid that is the correct type for your vehicle.