To add while the technical data that leads here or there, is interesting and provided certainly as well in the AAA study itself, I think it will have little application to the subject in this context. It will serve only to confuse the issue. I suggest staying with the easily understood perameters I have outlined. We must consider the audience and application of survey results the context they survive in. You expressing how many giagwhat abouts we loose as per your ananamomotermeter, may serve to show your qualification well but little serve this discussion. To be clear I am not intending to insult you but to display that will not serve purpose with humor employed. You doing that, certainly you will not. Point is most of us uneducated to it(to include myself) will take data as goblygook, unreadable, We stop immediately looking at it. The simple stuff reporters are good at. And keeping it simple is about the half of it. We must not fool ourselves most reading here are not engineers but fans. You are real world older vehicle it the definer of this....so what you say? Please keep the tech side out of it. To be clear by gauges I mean car gauges, what one may find in the car and look at, not technical gauges one may personally own.