Conversation so far:
How did Ernie Kovacs die?
Ernie Kovacs was killed in a car accident in Los Angeles during the early morning hours
When did Ernie Kovacs die?
Kovacs was killed in a car accident in Los Angeles during the early morning hours of January 13, 1962.

Question: Were drugs or alcohol involved?
Self-contained rewrite: Were drugs or alcohol involved in Ernie Kovacs' death?