It's important to note that this engine is not for everyday trucking. It's primarily used in large mining haul trucks, where its immense power is needed to move massive loads over rough terrain.
While the QSK95 is the largest in terms of displacement, Cummins offers other engines that are also quite powerful. For example, the QSK78 produces 2,700 horsepower and 13,500 lb-ft of torque.