That happened to a friend of mine when we were in high school, thankfully her family lived on the second floor. The car ran off the road and into her house right below her bedroom while she was asleep right above where the car went. She woke up and thought we were having an earthquake and then realized "Wait a minute, we're in Massachusetts, we don't GET those ..." and then was fully awake and realized what had happened. Thankfully in their case, there were no tenants on the first floor so no people were hurt but the drunk driver in the car.