WE WERE TRAVELING AT A SPEED OF 55-60 MPH ON A HIGHWAY WHEN WE WERE HIT FROM BEHIND. I WAS IN THE FRONT PASSENGER SEAT. THE VAN WENT STRAIGHT TO ITS SIDE AND I HIT THE DOOR WINDOW AND WE CONTINUED TO ROLL NUMEROUS TIMES AND THEN CAME TO A STOP ON ITS SIDE, MY SAME SIDE. DURING THE CRASH AND ROLLOVER THE OPPOSITE PASSENGER SLIDING DOOR WAS PARTIALLY RIPPED AWAY. TWO OF THE PASSENGERS WERE EJECTED FROM THE VAN. NO AIR BAGS DEPLOYED.