New Delhi, Dec. 7 -- Mahindra and Mahindra Ltd has started selling passenger vehicles of Ford Motor Co. in India as the auto makers expand their partnership beyond the joint development of vehicles. For the first time, Mahindra dealers are opening showrooms for Ford vehicles, especially in regions where the Detroit-based auto maker does not operate one or the existing dealer has not been able to garner sufficient sales, said two people aware of the development, requesting anonymity. Mahindra dealers are also opening separate service centres for Ford vehicles at their dealerships, they said. "Ford doesn't have a robust chain of channel partners, so by letting Mahindra dealers sell Ford's vehicles, the company is trying to reach most of the t...