I WAS ON THE MOTERWAY {UK} TOWING A CARAVAN I WAS DOING 45/50 MPH TRUCK PAST ME BY AND MADE US SWAY I GAINED CONTROL AND THEN THE CAR&CARAVAN STARTED BOUNCING. CARAVAN PARTED FROM THE CAR AND THEN WE FLIPPED OVER ON TO THE PASSINGER SIDE AND THEN ROLLED ONTO THE ROOF ACROSS 3 LANES. *AK