You can probably carry on a conversation and drive a car at the same time because driving the car:
A) has become an automatic process requiring little direct attention.
B) is largely based on conditioned responses that are controlled in the lower brain centers.
C) is different enough from conversing that the two do not interfere with each other.
D) is almost entirely a bottom-up skill.

Question

Quizplus · Accepted Answer

Over time, driving a car becomes an automatic process that requires little direct attention, so the brain can focus on other things like holding a conversation. This is why experienced drivers can often multitask while driving without realizing they are doing so.

You Can Probably Carry on a Conversation and Drive a Car