Dunno...maybe a peppy treatment, for a change, would get people's attention better than the usual anti-DUI commercials, which tend (at least in the US) to have the serious/somber tone?
Though, I don't know...how effective are the ads, really? After awhile, people probably stop really paying attention to the somber ones, and I don't honestly think the peppy ones would work, either. (Maybe a Japanese audience would be different from an American one, though?) I think the most effective ad would feature poor Miku getting creamed by the drunk driver but...*shudder* that'd drive the point home, for sure, but it'd be awful....