Thomas Flack, president & chief purchase officer (CPO), Tata Motors, is now the CEO-designate of Tata Sons’ ambitious lithium-ion battery company that will soon begin commercial production. Flack, 54, has been handpicked by Tata Sons chairman N Chandrasekaran to helm this Sanand-based project due to his huge experience in component sourcing and supply chain, officials close to the development said.