EVO Transportation & Energy Services, Inc. is a transportation operator, which engages in offering flexible and efficient solutions through a combination of diesel and compressed natural gas trucks and tractors. The company is headquartered in Phoenix, Arizona and currently employs 1,200 full-time employees. The company went IPO on 2001-09-28. The company provides surface transportation services to the USPS, with a diversified fleet of tractors, straight trucks and other vehicles that operate on either diesel fuel, gasoline or compressed natural gas. Its products and services include mail transportation and freight and brokerage services. In addition to its USPS mail transportation and delivery services, it provides freight and brokerage services to a variety of corporate customers. The company also operates a brokerage unit that supports the truckload business and services other corporate customers. The company may subcontract the transportation of certain loads to third-party carriers. The company operates through its two separate brands, including EVO and West Side Transport. The company has a fleet of over 900 power units and a national network. The company specializes in short-haul van truckloads throughout the Midwest and beyond.