Vehicles emit lights during a traffic jam at the Yanan elevated road in China's financial capital Shanghai, September 21, 2005.

Car executives warned that competition in the world's third-largest auto market had intensified as car makers from all over the globe push products in one of the few remaining bright spots for sales. Analysts reckon that China's car market will expand 10 to 15 percent this year, matching growth in 2004 but well off the near-doubling of 2003.