And in Washington, D.C., engineer, lawyer and safety advocate Clarence Ditlow has died. Ditlow was the director of the Center for Auto Safety for 40 years. For decades, he championed safety in the automobile industry, forcing manufacturers to recall millions of vehicles. He collaborated with Green Party presidential candidate Ralph Nader on multiple books, including “The Lemon Book” and “The Lemon Book: Auto Rights.” Clarence Ditlow died Thursday at the age of 72.