premise: The car was being driven by my permit - holding younger brother under the supervision of my mother when it went off the road . My brother overcorrected , which involved the car crossing the center line twice and eventually being flipped and resting on its side . The road is a pretty narrow , two lane curvy road with constant traffic . What caused your car to crash ?
hypothesis: The traffic stressed my brother out , which caused him to crash while my mom was tutoring him .