1999 HYUNDAI SONATA. DRIVING DOWN THE HIGHWAY AT 65 MPH AND THE RIGHT FRONT PASSENGER SIDE OF MY CAR COLLAPSED DUE TO RUSTED SUB FRAME WHICH BROKE THE AXLE AND CONTROL ARM. LUCKILY NO ONE WAS KILLED, BUT THIS WAS AN ALARMING INCIDENT I HAVE NEVER EXPERIENCED BEFORE WITH ANY CAR. THIS IS DANGEROUS. THIS IS A SERIOUS PROBLEM. *TR