Medium Duty Truck Market Size, Share Demand Report By Vehicle Type (Class 4 Trucks, Class 5 Trucks, Class 6 Trucks, Specialized Medium Duty Trucks), By Fuel Type (Diesel, Gasoline, CNG/LNG, Electric Medium Duty Trucks), By Application (Logistics & Freight Transport, Construction & Infrastructure, Municipal Services, Utility Operations, Waste Management) By Region & Segment Forecasts, 2026–2034