 OVERLAND PARK, Kan., April 27, 2021 GLOBE NEWSWIRE -- Yellow Corporation NASDAQ: YELL is proud to announce the purchase of more than 1,200 new tractors from Peterbilt Motors Company. The new equipment, Peterbilts flagship Model 579 Day Cab, is coming off their Denton, Texas assembly line daily and is making its way to Yellow facilities and drivers across the country. 