Driving a car indefinitely as long as the body is solid, is possible with all cars. Just changing the motor oil doesn't gurantee that you may still not keep it because the body rots or the AC or power windows are no longer worth fixing. There are so many things that go into keeping a car a long time, that motor oil changes and fuel injector cleaning are just a prt of the decision. If peripheral problems start piling up and are really expensive to fix, you WILL junk it regardless of the condition of the motor and injectors.
Too many of us are fixated on oil changes and motor maintenance, we don't see the real picture of long term ownership. @Jenetix comments are a perfect example of the frustration felt when problems arise in older cars that have little to do with your maintenance. The two types of cars that our family kept for over 200 k miles and 10 to 15 years were either those with exceptional reliability record for all systems and/Or were " manual everything" with little to go wrong. I'm sorry to say, that some cars are very difficult to keep a long time, regardless of how well you maintain them. Their limited life expectancy is " engineered in".