The document discusses powertrain trends for commercial vehicles globally and in China. It analyzes different vehicle segments including heavy duty, medium duty, buses, and identifies hybrid electric vehicles (HEVs) as gaining significant market share by 2020, especially in city bus and medium/heavy duty distribution segments due to their strong total cost of ownership case. Original equipment manufacturers are also increasingly offering HEV options for these segments. However, alternative powertrains are expected to achieve only low shares in China's heavy duty market by 2020, as the focus remains on optimizing conventional diesel engines.