BOLT IN CONVERTIBLE ROOF HINGE ASSEMBLY IMPALED DRIVERS SKULL. DRIVER WAS BELTED AND AIRBAGS DEPLOYED. 2 INCH BOLT PIERCED SKULL REQUIRING CRAINIATOMY, 25MPH FRONTAL COLLISION, 1999 MODEL HAS SAME ASSEMBLY WITHOUT THE BOLT. BOLT RESIDES APPROXIMATELY 2 INCHES FROM DRIVERS LEFT EAR (5'10