Selecting the correct power source is critical for operational efficiency. For urban areas with flat terrain, a 150cc to 200cc water-cooled engine is typically sufficient. However, if the cart is heavily loaded with kitchen equipment (e.g., fryers, refrigerators), prioritize a 250cc engine with a reinforced chassis and heavy-duty leaf spring suspension to ensure structural integrity and safety during transit. For eco-conscious zones, consider electric versions with at least a 3000W motor and high-capacity lithium batteries to ensure a range of 60-80km per charge.