A Japanese Olympic snowboarding medalist was found guilty Thursday of causing a car collision in western Japan last year in which six people were injured, and of fleeing the scene to avoid a drunk driving charge.The Katsuragi branch of the Nara District Court sentenced Taku Hiraoka, 25, who won bronze in the men's halfpipe at the 2014 Sochi Winter Olympics in Russia, to 30 months in prison, suspended for four years, with Judge Tetsuya Okuda calling the athlete's motives "extremely selfish."According to the ruling, Hiraoka hit a minivehicle while driving under the influence of alcohol at aro…READ FULL ARTICLE