HEAD GASKET FAILED WHILE TRAVELLING AT 70 MPH ON FLORIDA I95.4 PASSENGERS ,INCLUDING AN 11 MONTH OLD INFANT IN A CAR SEAT. DURING HEAD GASKET FAILURE , VEHICLE LOST ALL POWER AND STALLED IN THE HIGHWAY TRAFFIC LANE .VEHICLE HAD TO BE PUSHED OFF THE HIGHWAY WHILE ONCOMING TRAFFIC WAS IN CLOSE PROXIMITY TO OCCUPANTS. INFANT COULD NOT SAFELY BE REMOVED FROM SEAT UNTIL AREA WAS CLEAR OF TRAFFIC WHICH WAS APPROACHING AT THE SPEED LIMIT OF 70MPH..THIS WAS AN APPARANT HAZZARD TO LIFE AND LIMB FOR ALL OF US IN AND OUT OF THE VEHICLE.VEHICLE WAS TOWED TO AN APPROVED AAA SERVICE STATION WHERE IT WAS DETERMINED THAT THE VEHICLE'S HEAD GASKET HAD BLOWN.