I was on the Shuttle subway last week (the one that runs from Times Square to Grand Central and back) when I took these pictures.
Swiffer has done an amazing job in 'immersive advertising'.
The entire subway car (and the whole train I'm assuming) are covered walls and ceilings. Not just regular advertising but every surface on the all 4 walls and ceiling.
It visually feels like you are walking into a swedish sauna and although it still smells like crap (you know a regular NY subway) it's an incredbly effective advertising campaign.
I still dont want to buy their product (it's a pretty average product-we've tried it before) but as far as moxy/kudos for their marketing team, great job.