BMW has partnered with three Indians who have created a mobile phone application called MyCityWay, which helps people find everything from a place to eat to the closest park to relax in.
Rolls-Royce is banking on India's new millionaires.
BMW's plant in Chenna now has 50 per cent localisation.
Each year, at least 10 million Indians marry and the market is estimated at nearly $35 billion, growing at about 25 per cent annually.
The Audi mobile showroom will tour 30 cities over the next two years.