I had just moved to California and was out on a date with a guy. He had moved there recently too, and was giving me all kinds of tips, which was nice. He said “The thing you have to remember about Los Angeles is–the highway numbers that end in an odd number go North and South and the highway numbers that end in an even number go East and West.”
I looked at him kind of puzzled and said “…Isn’t it like that…everywhere?” He said “No, that’s only in Los Angeles.” Even at that time, I was pretty well traveled, and knew that freeways spanned across several cities and states. I also knew that everywhere in the country even number highways go East and West and odd number highways go North and South.