Police have referred to prosecutors their case against the manager of a Tokyo rental go-kart business suspected of renting to foreign tourists who are without a valid license and allowing them to drive on public roads, investigative sources said Friday.The referral without detention on Sept. 3 by the Metropolitan Police Department was due to the belief that the manager, a man in his 40s, merited indictment because of the potential to cause a serious accident, the sources said.Under Japanese traffic law, go-karts are classified as regular automobiles that require a valid driver's license to …READ FULL ARTICLE