Electric vehicle maker Ola Electric will set up what it says will be the world's largest electric vehicle hub in Tamil Nadu. Five other states - Karnataka, Andhra Pradesh, Telangana, Gujarat and Uttar Pradesh - were in the race but the investment went in favour of Tamil Nadu. The Tamil Nadu government credited its revamped Electric Vehicles Policy for the Rs 7,614 crore investment to manufacture electric cars in Krishnagiri district where it already manufactures electric two-wheelers.