Auto-safety advocate is a term used to describe the work of consumer advocate Ralph Nader, who is best known for his 1965 book 'Unsafe at Any Speed'. Nader is a five-letter word, and is often used as a synonym for auto-safety advocate. He has been credited with helping to pass numerous safety laws and regulations, including the National Traffic and Motor Vehicle Safety Act of 1966. He has also been an outspoken critic of the auto industry, and has continued to be a vocal advocate for consumer safety.