I get it. They would want to release their cars in US or Europe as their primary markets.
But even in those cases it makes sense to test in India. Why? Sooner or later you will have some situation in the US which may resemble daily traffic conditions in India. Imagine a law and order situation where people are running around without regards to traffic laws. Or some other situation where traffic is being rerouted through a wrong way, In US may be as an exception traffic is being routed through the left lane(being a right lane drive country) etc etc.
For all these situations you will very soon need a test environment that provides you with all situations to test.
But even in those cases it makes sense to test in India. Why? Sooner or later you will have some situation in the US which may resemble daily traffic conditions in India. Imagine a law and order situation where people are running around without regards to traffic laws. Or some other situation where traffic is being rerouted through a wrong way, In US may be as an exception traffic is being routed through the left lane(being a right lane drive country) etc etc.
For all these situations you will very soon need a test environment that provides you with all situations to test.