Before driving, our lives move quite slowly. We wriggle, then sit; we crawl, then toddle; we walk, then run. We're used to things beyond our reach changing only at a "human" pace, in time with our bodies.
To drive challenges all this. Our "frame of reference" is no longer just our limbs / bed / desk / room. It's a big metal box, moving on its own. It's artificial. It's "inhuman".
Now things around us change faster than we're used to. Faster than we like. Worse still, everyone else buzzes around in their own metal boxes. The world outside spins, out of our control. Our heads spin, too. There's too much to do, "all at the same time" !