Environmental-friendly buses begin operation in Changsha
Two environment-friendly buses among 50 others using liquefied natural gas (LNG) as fuel were first put into operation Wednesday in Changsha, capital of central China��s Hunan Province March 2, 2005. LNG as a kind of clean energy, may reduce waste discharge of the vehicle by 70 percent.
A bus driver checks the pressure of liquefied natural gas (LNG) tank before starts off in Changsha, capital of central China��s Hunan Province March 2, 2005.
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