German luxury carmaker Mercedes-Benz sees India emerging as a manufacturing and export hub for global markets, with its global chief Ola Källenius saying it is a question of when rather than if. However, the company has not yet taken a decision on manufacturing vehicles in India for export, and the immediate opportunity lies in expanding global sourcing of components and technology from the country. Källenius, chairman of the board of management of Mercedes-Benz Group AG, said India's growing luxury car market, expanding supplier ecosystem and engineering capabilities could eventually support a larger manufacturing role for the country. "I think it is…