Robotic arms weld automobile body frames on the Prius hybrid and Prius hybrid plug-in vehicle (PHV) production line inside an automobile manufacturing plant in Japan. (Photographer: Noriko Hayashi/Bloomberg)

Japan's Unexpected Growth Spurt Comes With Reasons for Caution

(Bloomberg) -- Japan’s unexpected growth spurt in the first quarter masked weakness in the economy just as policy makers prepare to hike the sales tax in October.