The problem they are focused on is the societal problem of people who drink beyond the legal limit and get behind the wheel of a car. That seems like a very worthy cause to me if you look at the statistics. “A special offense related to drinking is alcohol-impaired driving of motor vehicles and the resulting high rate of accidents, with fatalities, personal injuries, and property damage. For example, in 2002 alcohol was involved in about one-third of the more than 40,000 annual road traffic fatalities in the United States, in possibly 500,000 injuries to persons, and in more than $1 billion worth…” Source