Some of my early memories of certain roads were based on a perception of direction that I didn't confirm with a map, and the misconception remained with me for a long time.
When the tolls came down from the Connecticut Turnpike when I was a kid, our regular route up into New England broadened to include not only 684-84 but 95-91-84 (and ultimately the Merritt). I remember being convinced that north of New Haven, the segment of I-91 along the Quinnipiac River marshes turned due east until Exit 11 or so. It took several years as a passenger through there to get re-oriented properly.
Oddly, on one of my earliest childhood trips on the New Jersey Turnpike through the Meadowlands, I recall thinking the same thing -- that the road ran east-west through that stretch. Something about me lost direction in marshes.
Other than that, everything just seems longer when you're younger, not driving, and/or new to a road. I took a bus across Pennsylvania on 80 when I was 10 and it seemed interminable. Now, many years later, it... ok, bad example.