Hi Sedate, welcome! Quite a good ID, chosen thoughtfully. so, after about 20 years of teaching, and some years at Tata's, It's quite expected you would be a sedate driver 
. Please be a regular here and contribute, as between Love of cars and Knowledge of cars, we probably weigh heavy in the former, than the latter 
While you post your opinion on Vaibhav's query, let me put my unsolicited opinion, as it is sure to spark a debate here. So here it goes -
I feel Tata Sierra was just an attempt at salvaging the tooling for Tatamobile, a product too early for it's market. The Tatamobile bombed, and the engineering investment had to be recouped. So what do Tatas think? Tata Sierra. Spend some wad of money on advertising, with some growling base voice pushing the love for the wild, and put up a totally makeshift hardtop on the truck bed with some longish bench seats. You have an SUV made out of a pedestrian pickup truck, which was not supposed to be as glamorous as the the western pickup trucks, which are monsters.
Unfortunately for them, India was late to catch on the SUV craze as well, and the awkward Sierra died a painful and neglected death.
When the time was right, Tatas bounced back with the same pickup truck, now calling it Tata 207, to somehow tie it to the success that the LCV Tata 407 was enjoying then. This time, the market was ripe for it, and Tata 207 clicked, and sales boomed. Tatamobile was third time lucky, after two disasters in two different avatars.
