A conundrum: A man is dead inside an old-fashioned glass sided phone booth…?

A man is dead inside an old-fashioned glass sided phone booth… two side of the phone booth are broken out. There is broken glass and blood everywhere. The telephone receiver is dangling from its cord… the man’s wife is on the other end of the phone. Outside the phone booth there is a car idling. There is a fish and fishing gear inside the car. What were the circumstances of the man’s death (ie, How did he die?). My class loved this conundrum!