Third annual inflatable sex doll raft race "Bubble Baba Challenge" on the Vuoksa river near St. Petersburg (26/27 Aug 2005).

official site: http://www.bubblebabachallenge.ru/

more info:

in Russian: http://www.x-team.ru/?Filtr5=1&NewsView&ID=4303

in English (about last year contest):
http://www.mosnews.com/feature/2004/...bblebaba.shtml
http://www.designboom.com/contemporary/sexdoll.html