The Mack PI64 is notable for its all-electric powertrain, which offers an eco-friendly alternative to traditional diesel engines. It is part of Mack's Granite series and is designed to provide robust performance for vocational applications while reducing emissions and operating costs. The truck features advanced battery technology, regenerative braking, and a quiet operation, which is advantageous in urban environments. Additionally, it retains the durability and reliability associated with the Mack brand, making it suitable for various heavy-duty tasks.