A man who claims to have Aids has been arrested after hijacking a bus in Hong Kong and causing it to crash, the South China Morning Post has learned.A source said the 28-year-old mainland Chinese man, surnamed Miao, had blood stains on his hands when he was apprehended.The man also incoherently spoke in Chinese and appeared dazed, according to the insider.The 54-year-old Citybus driver, surnamed Choi, made a report to police at 6.45pm on Friday after upper-deck passengers told him that Miao...