- Summit Holdings is a privately-held company that does business as Summit Truck Group, Summit Bus, Summit Idealease and Summit PacLease. The company operates 33 commercial truck and bus dealerships in Arkansas, Kansas, Mississippi, Missouri, New Mexico, Oklahoma, Tennessee, and Texas. Summit Truck Group represents and services International®, Kenworth, Volvo, Mack, Ford, and Isuzu commercial trucks, and Crane Carrier specialty vehicles. Summit Bus represents and services IC Bus, ElDorado National, and other commercial bus brands. Commercial truck lease and rental, mobile and dedicated maintenance services are offered through 19 Idealease locations and 2 PacLease locations. Summit serves customers with more than 1,400 employees, 475 technicians, over 475 service bays, and over $31 million in all-makes stocked parts.