Your car analogy is very, very confused. If a simulation of a car can get you from A to B, requires the same steering, fuel and servicing, gives you the same tactile feedback, is it a car?
Of course "I care about humans because I am human" is a self-consistent position to take. But now you need to decide if you want to consider a full simulation that faithfully reproduces everything that physically happens between our ears as human. After all I might very well implement this simulation using a bunch of tensor multiplications in an autoregressive setup...
> If a simulation of a car can get you from A to B, requires the same steering, fuel and servicing, gives you the same tactile feedback, is it a car?
No, because a simulation of a car cannot get me from A to B. No matter how accurate you make it, I can't get to my supermarket with it, because it's just a bunch of math on a computer.
It's an interesting sort of self-defeating position, the whole "simulation of human consciousness = human consciousness", because it simultaneously attempts to devalue the human experience, while also elevating the importance of a particular human brain process.
A robot running a simulation of the human mind is a robot, not a human.