Automotive VVT System Market Size & Share, By Fuel Type (Diesel and Gasoline), Methods (Cam Changing, Cam Phasing, Variable Valve, and Cam Phasing & Changing), System (Continuous and Discrete, By Number of Valves, By Valve Train, By Technology, By Vehicle Type, By Actuation Type, By End-use) - Growth Trends, Regional Insights (U.S., Japan, South Korea, UK, Germany), Competitive Positioning, Global Forecast Report 2025-2034