: To say that the "only" real world measurable statistic is acceleration sounds a bit narrow. If I was merely concerned about acceleration between stop lights in a straight line, I would drive my '66 Chevelle everywhere. The multitude of imeasurable things are why I own a BMW. These are the most Real-world reasons I know of,and relegate straight line acceleration to about 20 th on my list of important traits. Your conjecture and logic are amusing. Enjoy whatever it is you drive.