The upcoming Gujarat factory for the Nano will start trial production in the fourth quarter of this financial year, Tata Motors said .PM Telang, India MD for Tata Motors, said work was on at the new factory site for the Nano at Sanand (near Ahmedabad) where the company decided to move late last year after it had to vacate the Singur land in West Bengal, following protests over land acquisition spearheaded by Mamata Banerjee’s Trinamool Congress. Telang said full-scale production at Sanand could begin in six to eight months. The company plans to set up an initial annual production capacity of around 2.5 lakh units at Sanand, which can be expanded to 5 lakh units. Telang said the current makeshift production site for the Nano, at Pantnagar in Uttarakhand, was churning out around 3000-4000 units per month. The company had moved to Sanand in October last year where it will set up a mother plant for the budget car, apart from vendor park, on an area of about 1100 acres.