Even as the Tatas unveiled their Rs one lakh car in Delhi, West Bengal's main opposition Trinamool Congress on Thursday threatened to stall its manufacture at Singur plant.
"Until farmers get back their land forcibly acquireto enable Tata Motors to set up the plant, he said "the matter is still sub judice."
"We are warning Ratan Tata that he should not dare to go to the Tata Motors Singur plant without returning land to farmers who were forced to part with it," he said.
The TC leader also threatend to launch a movement but did not elaborate, saying "time will reveal its form."
He alleged Chief Minister Buddhadeb Bhattacharjee had always tried to crush their movement with the help of guns and the police. "But we will not stop our movement."