Trash trucks: The economics of Natural Gas

A natural gas trash truck in Los Angeles

Within two years, Los Angeles might convert their entire fleet of trash trucks into natural gas vehicles. Already, LA's Bureau of Sanitation is using 300 such trucks.

These trucks, built by Peterbilt with Cummins Engines, reduce CO2 emissions by 90 percent, but they cost $50,000 more per truck. Natural gas is also cheaper than diesel fuel, but it could take as long as 10 years to recover costs.

Still, isn't that investment worth less global warming emissions and less foreign oil dependency? Check out MSNBC for a video.