After bagging 255 e-buses' orders from six state transport undertakings under the first phase of incentive scheme for electric vehicles in public transport, Tata Motors is betting big on the segment, said an official here on Wednesday. It has tenders to supply 255 electric buses to six state STUs -- WBTC, LCSTL, AICTSL, ASTC, J&KSRTC and JCTSL. Kolkata's order of …