Tata's first car wasn’t the Estate or the Indica. It was the Tatanagar, an armoured car made to support the war effort in the forties.

Efficient Drivetrains and American Repower are partnering to convert a fleet of six armored vans to run on a combination of natural gas and a plug-in hybrid. The first of them should be ready in 2016.

The armoured car was assembled at the Eastern India Locomotive Plant in Jamshedpur, which later became TELCO (Tata Engineering and Locomotive Company) in 1945. “The steel came from Tata Steel ...