WHILE DRIVING DOWN THE HIGHWAY AT ROUGHLY 75MPH THE VEHICLES SPEEDOMETER SUDDENLY JUMPED TO 105MPH THEN DOWN TO 65MPH, THEN TO ROUGHLY 90MPH AND FINALLY DROPPING TO 0MPH AT WHICH TIME THE TRANSMISSION SUDDENLY SHIFTED DOWN INTO 1ST GEAR CAUSING THE REAR WHEELS TO LOCK UP WHILE GOING 75MPH ALMOST KILLING MYSELF. AFTER THIS OCCURRED AND THE VEHICLE STOPPED THE IGNITION WAS TURNED OFF. ONCE RESTARTED EVERYTHING SEEMED TO BE FUNCTIONING AS IT SHOULD. A COUPLE DAYS OF DRIVING NORMALLY WENT BY BEFORE THE VEHICLE LOCKED ITSELF IN 5TH GEAR, THE ONLY WAY THIS WAS FIXED WAS FOR THE VEHICLE TO BE CYCLED ON AND OFF. A FEW MORE DAYS OF NORMAL DRIVING WENT BY AND THE VEHICLE THEN EXHIBITED SHIFTING FROM 1ST TO 5TH ONCE SPEED REACHED ABOUT 5MPH. THIS OCCURRED UNTIL THE VEHICLE WAS CYCLED ON AND OFF. FROM MY RESEARCH ONLINE THIS IS DIRECTLY RELATED TO THE OUTPUT SHAFT SPEED SENSOR IN THE TRANSMISSION LEAD FRAME. 2012-2013 F150S WERE RECALLED DUE TO THESE SAME SYMPTOMS, HOWEVER, THERE HAS NOT BEEN A RECALL FOR 2014'S AS OF YET, EVEN THOUGH THEY USE THE SAME FAULTY TRANSMISSION LEAD FRAME.