Nothing. I was sleeping in the middle row of seats in the van & wasn't wearing a seatbelt. Later on found out some animal had darted across the highway & startled the driver which caused him to put the left side of the van onto the grass median. A rock or something shredded the front left tire & he was trying to regain control of the vehicle & was overcorrecting. When he slammed on the brakes we were at an angle & the van started flipping on its left side. From what witnesses told the FHP (Florida Highway Patrol) I was ejected on the 2nd or 3rd flip & the van just looked like it was chasing me. I actually stood up after I came to a stop- the things you are capable of when adrenaline is coursing full on is amazing.