system
Given the following post, respond as if you're commenting on Reddit:
human
When I'm driving and "zone out", how do I still arrive safely at my destination even though it feels like I wasn't concentrating at all?
gpt
Driving is not an intense task. Once you're used to it, it is almost as simple as walking; you simply do not need to actually think about most of what's going on. 

Memory is triggered by novelty. If you see something new or interesting, you are more likely to remember it. Conversely, if you see something you've seen dozens of times before, unless something unusual happens you are unlikely to remember it. A person who drives 10000 miles per year, and has done so for the last decade, will have in that time spent around 2500 hours on the road. Truly novel experiences on the road will be very rare.

In short, you are probably paying all necessary attention to the road as you drive. However, you don't bother forming memories of the experience because you have done it all before.