I learned to drive a car pretty late in life. Growing up, unlike kids of my age, I was never crazy about riding motor bikes or driving cars (I still am not). Most of my friends and cousins learned to drive by the time they were 16. I went to driving school when I was 18, somehow passed the driving test, got a license; never drove a car for another decade. I learned to drive properly after my wife got a car for her daily office commute. Today I can drive through Bangalore traffic without losing my cool. I've come to realise humans can be functional drivers after a couple of weeks of practice and continue to learn from new driving scenarios.
If you drive to-and-from work every day and seldom drive the car anywhere else, you'll be very good at doing that, but have some difficulty when you encounter a new, tricky scenario which involves you using more reasoning than your default driving settings.
Purely from observation and the very little I know about the brain, the brain seems to have a quick access mechanism for the frequently accessed data. Strong neural pathways for the stuff you do often. Like the daily commute; which potholes to avoid, where to slow down, where to keep left etc. The daily commute is a perfect example for the so-called system 1 thinking. Whereas driving in a new setting might require more deliberate system 2 thinking.
That being said, humans have much more generalized capabilities to help them in a new driving scenario. An intrinsic understanding of the physics of the world which is learned from interacting with the world. Also, the ability to acquire new knowledge and save it in long term memory for later use. Like, a new traffic sign you encounter and what it implies. Humans can memorize this information and use it when required at a later time. There is always a possibility of memory loss, if that knowledge is not utilized for a very long time. Your brain will probably find that information useless as it takes up useful brain space which could be used for something more useful. It's also interesting that the memory pruning is not equivalent to a file delete on a computer, most information has some remnants of it in the brain. Like when an old movie you've completely forgotten about starts to come back to you when rewatching it.
So, the more you expose yourself to a certain task or data or both, the more quick access memory is allocated to it. The key takeaway is that we do have the ability to learn and convert tasks that require system 2 thinking into system 1, by repeated, deliberate practice.