I do not know about other cars, but I have successfully installed Cruise Control on my 2010 FIAT Linea T-Jet. I strongly disagree with people who say CC is unfit for use in Indian Highways. I am able to use the CC for extended periods, as long as it is set to a sane speed and I do not hit the brake, the moment I see any obstacle at the horizon.
Let me also mention this - I am no specialist, just another IT guy with a passion for DIY. And the cost was very small. Less than a tankful of petrol. None of the required components were imported, except for the CC stalk itself.