World War I started in a car, James Dean's life ended in one. As the stories go, the famous cars involved in these tragedies are "cursed" -- causing harm for years beyond these horrible events. But if curses aren't real, how do we explain the incredible series of events that unfolded?

Sunset Boulevard in Los Angeles holds an old secret -- a dangerous banked turn reshaped decades ago after an epic crash nearly killed Mel Blanc, the voice of Bugs Bunny. The tale of what happened that night has only ever been a Hollywood rumor, until now.