Plot hole: When the mom spots the tornado behind them down the street, she brings the car to a screeching halt on the side of the road and orders the sisters to get out. They then take off on foot down a long driveway to get to a stranger's house. This is an illogical decision. If wanting to hurry to escape the tornado, why stop at the driveway and take off on foot? They would have reached the house much much quicker by driving down the driveway to the house.