600 million estimate says Japan will have One vehicles by 2030 . GM , Chevy , BMW and Citroen are among brands showing in Shanghai this week . `` 10 to 7 percent growth will last for several years , '' says Citroen 's top executive . Supply-chain concerns loom after Japan 's devastating earthquake and tsunami .
One estimate says China will have 600 million vehicles by 2030 . GM , Chevy , BMW and Citroen are among brands showing in Shanghai this week . `` Ten percent growth will last for several years , '' says Peugeot 's top executive . Supply-chain concerns loom after Japan 's devastating earthquake and tsunami .