Tata has a strong track record in, well, trucks, having built such vehicles since the ’50s. In the ’90s it started making passenger cars, too, which the company intends to sell to the world.
TATA is everywhere in India. The vast conglomerate holds interests in telecoms, IT, power generation/distribution, hotels, steel, chemicals, consultancy services and some more, including watch-making. The bottled water one gets in most places in Mumbai (and, presumably, in other parts of the country) comes from Tata’s beverage business.