"Monster Media recently unveiled the first-ever transit application of its patented Turnstile AdSleeves as part of a unique pilot program with Viacom Outdoor. Nearly 300 turnstiles are now dressed with the adsleeves bearing insurance provider Geico's message."
-- press release
That, of course, in addition to advertising on escalator handrails (company, flickr pic).
Earlier:
Viacom Launches Digital Posters
