I think MahindraUSA is here to stay in the US, just like its parent company will remain in India and other parts of the world. Take a look at Mahindra's history you'll see that it isn't a newcomer to the game. Remember the Jeep from WWII? Also, while not completely decoupled from the rest of the world's economy, India's growth has slipped from 9% to 5%* which is an enviable place to be right now. (much better than negative growth aka recession)
Also, with MahindraUSA's headquarters in Tomball, TX I'd be willing to guess you'd always have dealers within range.
Good luck on your search.
*
IMF sees India's growth rate slowing dramatically