The managing director of Tata Motors, Ravi Kant, is due to hold a press conference in Bangkok on Thursday, on Tata Motor's Thai business. Tata Motors, India's top bus and truck maker, has been in talks with Ford since it was chosen as the front runner to buy Jaguar and Land Rover a few days into 2008. Shares in Tata Motors, also India's No. 3 car maker, closed down 0.1 percent at 679.40 rupees in a Mumbai market that fell 0.8 percent.