The DW and I don't own a car. Our bug out gear is touring bike ready and our multiple planned routes out of town include bike paths and roads compatible with bike travel. Our average travel speed on the road is around 18 - 20 mph. Our freeways around here are backed up daily at rush hour I would hate to be stuck on one of them during an emergency evacuation.

Not owning a car does not necessarily equal being unprepared.