Santa Monica police arrested and charged 68-year-old Sunday Night Football broadcaster Al Michaels last night.  One surprising aspect of his arrest is how rare it is for someone his age to drive drunk.  In California, convicted DUI offenders are on average 30 years old.  Of all of the adult age brackets, people 65 and over are the least likely to drive drunk, as the chart below shows (adapted from the Substance Abuse and Mental Health Services Administration).

Source:  Figure 3.5, Substance Abuse and Mental Health Services Administration, Results from the 2010 National Survey on Drug Use and Health: Summary of National Findings, NSDUH Series H-41, HHS Publication No. (SMA) 11-4658. Rockville, MD: Substance Abuse and Mental Health Services Administration, 2011.