Berthod Motors, Inc in Glenwood Springs, Colorado offers new car sales, new truck sales, automobile repair services, pre-owned vehicle sales, and a full-service auto body shop. Berthod Motors, Inc. is an authorized GM dealer. Berthod Motors, Inc. sells GMC, Jeep, Pontiac, Buick and Miles Electric Vehicles.. New Car Sales; New Truck Sales; Automobile Repair; Automobile Service; Pre-owned Vehicle Sales; Full Service Auto Body Shop.