Amazon.com Inc has ordered more than 1,000 truck engines that run on compressed natural gas as it tests ways to shift its U.S. fleet away from heavier polluting trucks, the company told Reuters on Friday. Slideshow ( 3 images ) The coronavirus pandemic caused delivery activity to surge in 2020, with truck volumes exceeding 2019 levels on average while passenger car traffic fell. But that increase in road activity means more pollution, as heavier-duty trucks emit higher levels of greenhouse gases than passenger vehicles. Transportation companies are building their stable of electric vehicles to reduce carbon emissions. Much of the nation’s freight is delivered via medium- and heavy-duty trucks, which account for more than 20% of the industry’s greenhouse gas emissions even though they make up less than 5% of the road fleet, according to U.S. federal data. “Amazon is excited about introducing new sustainable solutions for […]