TTSI trucks are pictured refueling with liquefied natural gas (LNG) in Port of Los Angeles in San Pedro

 
TTSI trucks are pictured refueling with liquefied natural gas (LNG) in Port of Los Angeles in San Pedro
TTSI trucks are pictured refueling with liquefied natural gas (LNG) in Port of Los Angeles in San Pedro, California in this May 29, 2008 photograph. REUTERS/Westport Innovations Inc./Handout