The document discusses a report from the Commission for Environmental Cooperation (CEC) called "Destination Sustainability" about reducing greenhouse gas emissions from freight transportation in North America. The report examines the environmental impact of freight transportation, specifically road and rail modes. It finds that freight transportation emissions are growing and projects that total freight tonnage will double by 2035 due to growing economies and populations in North America. The report recommends coordination among transportation agencies, investments in infrastructure, adoption of fuel-saving technologies, and data sharing to help reduce emissions from freight transportation across North America.