2010 SCION TC Unknown Or Other Problems

DRIVING TO WORK ON THE INTERSTATE ONE MORNING. ITS RUSH HOUR TRAFFIC SO WE ARE BARELY GOING 30MPH. I HEAR A LOUD NOISE THAT SOUNDS LIKE A GUN SHOT. SO LOUD. IT SCARED THE CRAP OUT OF ME. UPON INSPECTION I SEE THE GLASS SUNROOF SHATTERED INTO A MILLION PIECES AND TRICKLING DOWN THE BACK GLASS. TOYOTA NOR SCION WOULD TAKE FAULT. TOYOTA TOLD ME SOMEONE MAY HAVE SHOT A GUN INTO THE AIR AND THE BULLET HIT IT OR A HUGE ROCK HIT IT. REALLY PEOPLE, I WAS ON THE INTERSTATE IN RUSH HOUR TRAFFIC VARELY MOVING IN THE INSIDE LANE.

I PURCHASED MY SCION FROM MY LOCAL DEALERSHIP IN FEB OF 2015. ON THE 17TH OF MARCH WHEN COMING TO A STOP THE DRIVER SEAT MOVED FORWARD ON ITS OWN. THE SEAT HAD BECAME UNLATCHED FROM THE SEAT RUNNER UNDER THE DRIVER SEAT. I HAD TO ADJUST THE SEAT AND MADE SURE THAT IT LOCKED INTO PLACE. SINCE THEN THIS PROBLEM HAS HAPPENED OVER AND OVER. I WOULD SAY AT LEAST 40 TIMES. THE SEAT WILL NOT LOCK INTO PLACE WHEN YOU SLIDE THE SEAT FORWARD OR MOVE IT TO PLACE ITEMS BEHIND IT AS WELL. IT WILL LOCK ON ONE SIDE OF THE SEAT RUNNER AT TIMES AND I HAVE TO ADJUST IT EACH TIME. THIS PROBLEM CAN BE A SAFELY ISSUE WHEN BRAKING HARD OR IN A ACCIDENT AS WELL. I HAVE SEEN RECALLS ON THIS PROBLEM WITH OTHER MODELS OF THIS AUTO. I TALK TO MY LOCAL...