Buying/Owning a discontinued car in India- Talking cars

What if the car you own and drive everyday, suddenly gets discontinued? Or even worse, the company that made it shut shop overnight? Will you get parts? Will there be someone to service it afterwards? Will they honour your warranty? We get a lot of questions from people asking if they should buy a car from a brand whose future doesn't look very promising and in this discussion, we try our best to answer them all.