Rail fans bid farewell to one of Japan's iconic "Doctor Yellow" bullet trains, used to diagnose faults on the country's high-speed shinkansen lines, as it made its final run Wednesday after about 24 years in service.As the JR Central-owned T4 edition of "Doctor Yellow" arrived at Tokyo Station around 6 p.m., children erupted in cheers while others took photos of the yellow train, which people felt lucky to spot over the years due to its elusiveness."It was cool. Thank you for fixing the railways all this time," said 6-year-old So Fukushima, who came from Kawasaki, Kanagawa Prefecture, near …READ FULL ARTICLE