[Grumpy old man]

I would say most if not all original patterened fabric are designed to be alligned when cut to be sewn , The material comes 57 inches wide ,Some 60 " so that even if it is to be used on bucket seats the pattern will match on both seats , Misaligned material on seats is usually upholster error or their just too lazy to make it match or it's just a cheap cover and quality control doesn't matter . Your new Chevy /Ford/ dodge cars and trucks that came with a leather interior ,The only real leather on the seat is the face that touches your body when your sitting in it ,the sides /back and bottom surrounds are all color/grain matched vinyl . it's all about saving every dollar for the manufactor . True 100% leather seats are very expensive