Bringing a brand new kitten into your home is an experience. It has lots of energy, and if you go to the trouble of training it, it might do what you say.
Adopting an older cat is another kind of experience entirely. That cat is set in its ways. It's probably not going to play with that feather on the end of a stick unless it feels like it. It may not even want to sit on your lap and purr, unless it's an incredibly inconvenient time for you. If you try to train it, it's going to look at you like, "What are you doing? I'm the one doing the training here."
It's the same thing with cars. Buy a brand new one and it will go 0 to 60 in however many seconds that the salesman promised it would. And the air conditioner will run. And the power windows will work when you want them to. And you won't have to let it run for at least ten minutes before it will let you use the windshield wipers.
Adopting an 18+ year old car is different. It might not want to sit on your lap and purr unless it wants to, and you're just going to have to learn its eccentricities, and learn to love them. That thing is set in its ways, and you're going to have to live with them. So have a good time turning the air conditioner on and off until it decides it wants to cool the vehicle.
Welcome to the family, Maurice.