FAIRMONT — A longtime Fairmont school transportation provider is changing ownership. Reliant Transportation Group, formerly known as Minnesota Coaches, has acquired Minnesota Motor Bus, which has served Fairmont schools for more than 45 years.Reliant also acquired Southwest Coaches, a family-owned company that has provided transportation to the Marshall School District for about 70 years. The companies were owned by brothers Tom and Jim Hey, who say they chose Reliant to preserve the businesses’ legacy and continue serving local communities. There will be no interruption in service or changes to routes, and the Minnesota Motor Bus name will remain on Fairmont school buses. Local drivers, mechanics and other employees will continue working from the existing Fairmont location. Reliant Transportation Group was founded in 1959 and now operates more than one-thousand vehicles from more than 20 locations across the Upper Midwest.