Our consciousness has developed by chance. We were not made by another conscious species, we did not make ourselves conscious. We are feeding in enourmous amounts of data into neural networks using different methods. Our nervous system does not differ much from a neural network and with the right conditions, the resulting model may have a consciousness. Those conditions are not known to us, so we try again and again and again until, by pure chance, we get a network that is self aware. I suspect that, the higher the complexity of the network, the higher the chance for something similar to our consciousness to develop.
With this, our current approach is entropy. Get as many differing conditions as possible and mash em together. It may spiral into consciousness.
Possibly. But wire cutters exist. Installing custom firmware for a car seems unnecessarily dangerous. Just remove the fuse, cut a wire or go to a local shop and get the comms system disabled.