Wanted to bring up one or two things. First off, did you know Sawai Miyuu's been in some public service posters for the Tokyo government? I've been seeing these around the city since February but never had a camera to take a photo of it for the site, and accidentally stumbled onto the campaign's website a few days ago where I found they had a scan of it.
The campaign site itself is here. They basically want people to stop calling ambulances for minor emergencies and take taxis to hospitals instead, which they've renamed "support cabs."