Source:
http://ksn.com/2017/02/24/mysterious-plungers-pop-up-along-wichita-bike-lane/
Update: http://www.kansas.com/news/local/article137642098.html
Success!!
Update May 2917: Plunger Bike Lanes For All:
http://www.bicycling.com/node/2106091?utm_source=t.co&utm_medium=Social&utm_term=902251594&utm_campaign=Bicycling