The Nano, if you recall, took its avatar to rescue the struggling section of the Indian middle class families to thundering applause from the world in general. The car is widely seen as a fine case of using a company’s PR machinery effectively for marketing a product. And it is not difficult to see reason in the argument – before spending a single rupee towards marketing the product, everyone was already talking about the car. The cacophony grew louder as the product was first unveiled in 2008 and broke to …