But I didn't bring it. I… I mean I didn't know anything about it. It wasn't there when I left Delhi. My bags were searched. It was part of the airport security check.
The Commerce Secretary Anup Wadhawan said the move would have a minimal economic impact and that Delhi was keeping retaliatory tariffs out of its talks with the US. Devina Gupta is in Delhi.
But more cars also means more population, already a major problem in big Indian cities like Delhi, which is why there's a growing focus on electric technology.
Listen to Rajesh Joshi, reporter for BBC World Service's, The Climate Question, interviewing a rich Indian housewife, Priti Dhagan, in her luxurious home in New Delhi.