There was pre-existing bondo in the left rear quarter panel around the taillight, which has been cracked for several years. Then I tagged a guard rail at about 40mph, destroying the front fender and putting two creases down the length of the body. So I set out to redo the bondo on the quarter panel and fill the dents and creases left from a prior parking lot incident as well as the guardrail incident. I also patched and smoothed over two rocker panel rust holes before they got too bad.