A common psychological behavior as described by Jack Kerouac in On The Road:
I told Dean that when I was a kid and rode in cars I used to imagine I held a big scythe in my hand and cut down all the trees and posts and even sliced every hill that zoomed past the window. “Yes! Yes!” yelled Dean. “I used to do it too only different scythe—tell you why. Driving across the West with the long stretches my scythe had to be immeasurably longer and it had to curve over distant mountains, slicing off their tops, and reach another level to get at further mountains and at the same time clip off every post along the road, regular throbbing poles.”
As a child lying back in my father’s car in the back seat I also had a vision of myself on a white horse riding alongside over every possible obstacle that presented itself: this included dodging posts, hurling around houses, sometimes jumping over when I looked too late, running over hills, across sudden squares with traffic that I had to dodge through incredibly—” “Yes! Yes! Yes!” breathed Dean ecstatically. “Only difference with me was, I myself ran, I had no horse. You were a Eastern kid and dreamed of horses; of course we won’t assume such things as we both know they are really dross and literary ideas, but merely that I in my perhaps wilder schizophrenia actually ran on foot along the car and at incredible speeds sometimes ninety, making it over every bush and fence and farmhouse and sometimes taking quick dashes to the hills and back without losing a moment’s ground …”
If anyone knows about any serious academic research into this behavior, I’d be interested to know about it.