MIAMI--(BUSINESS WIRE)--Ryder System, Inc. (NYSE:R), a leader in commercial fleet management and supply chain solutions, has achieved a significant milestone with its fleet of natural gas vehicles surpassing 30 million miles. The fleet consists of liquefied natural gas and compressed natural gas tractors serving customers in California, New York, Michigan, Texas, Arizona, Utah, Maryland, Georgia and Louisiana, as well as in Canada. Since deploying its natural gas vehicle program in 2011, Ryder