2012 TOYOTA PRIUS C Visibilitywindshield Problems

WINDSHIELD WAS CHIPPED BY SOME DEBRIS WHILE DRIVING ON THE HIGHWAY GOING ABOUT 55 MPH, THE SIZE WAS HALF A CENTIMETER, IF THAT. THE NEXT MORNING IT TURNED INTO A 6 INCH CRACK AND HAS GROWN EVEN BIGGER IN THE PAST COUPLE WEEKS TO WHERE IT HAS COME TO BLOCK MY VISION. OTHER CARS THAT I HAVE OWNED HAD CHIPS IN THE WINDSHIELD, BUT NEVER DEVELOPED INTO A CRACK. I AM THINKING THE WINDSHIELD IS TOO, TOO, THIN FOR IT TO BE PRACTICAL FOR A VEHICLE TRAVELING HIGHWAY SPEEDS AND HAVE READ THAT THIS IS A COMMON OCCURRENCE AMONG OTHER OWNERS. MY BIGGEST CONCERN, IF THE DEBRIS IS A LITTLE LARGER, WILL THE WINDSHIELD PREVENT PENETRATION INTO THE DRIVER AND/OR PASSENGER COMPARTMENT SO AS NO ONE WILL BE HARMED DUE TO A THIN WINDSHIELD? *TR