While rail is the most environmentally friendly means of transport, freight trains today do not look much different than those from the past. To reach the climate and energy targets of the European Union while achieving higher payloads and a better ROI, the railway sector needs an innovation boost to build more efficient and sustainable rail freight wagons. TransAnt GmbH, a joint venture with ÖBB Rail Cargo Group and voestalpine Steel Division, was established to bring more efficient and sustainable rail freight solutions to the market. With its innovative concept based on modularity and lightweight design, once operational the company seeks to revolutionize the market as a full supplier of freight wagons. The company used Altair® HyperWorks® for topology optimization – in particular Altair® HyperMesh® – to realize the transition to a weldable structure, Altair® HyperView® for pre- and post-processing, and Altair® OptiStruct® for FEA (including local buckling) and optimization.