Automotive Dealership Market Size & Forecasts 2026-2035, By Segments (Vehicle Type, Dealership Size, Ownership Structure, Sales Channel, Vehicle Class), Growth Opportunities, Innovation Landscape, Regulatory Shifts, Strategic Regional Insights (U.S., Japan, China, South Korea, UK, Germany, France), and Competitive Dynamics (AutoNation, Lithia Motors, Penske Automotive Group, CarMax, Group 1 Automotive)