you could be right on 23rd series - my comparison is for 22nd. I should of said that. The door trim panels, chrome inserts in the window trim differ too. I've seen several original 22nd series cars and the 3-tone houndstooth is on the Eight.

fine check used in the Eight, stripe in the Eight DeLuxe

quite possibly 2 cars - compare the left front fenders

what I meant was on the what-if photoshop job, the rear window would hit the door's fender cut out if lowered. There are those pesky details to work out on real cars

need a vent included in the rear - the rear window won't go down!

Roger, could you send me a PM? I have a CAD/CAM question and don't want to hijack the thread.

the high numbers for 32 -4 make sense as these have long been regarded as desireable cars. I'm surprised that the 29-31 % (all seniors) is not higher than the later years that are mostly juniors. My SWAG on that is that the 29-31's were "old, thirsty cars" by WWII, while the juniors were recent used, in service cars. I'd guess the attrition of say 1937 110's after WWII was greater than 31 Su8's.

The addition of new models each year with decay of past years in the math model can I think be handled by doing it with a finite integral from year 1 to the current year.

your equation for first order exponential decay is right , but the problem lies in the assumption that the decay rate is constant. WWII scrap drives, the likelihood of a 34 V12 being preserved vs. a 51 200 sedan, and I think that after a certain number of years the car passes from the used car decay rate to the collector car decay rate (which can be negative!)

this is not the first year for the Detroit NAIAS logo. Infringement is moot is no one is a valid current holder. Design patents used to be given out rather freely.

I agree it's the owner's car to do with as he pleases. I wouldn't worry about the handling - the 15 x 6 alloys and Camaro sub-frame will handle it. Let's hope it was a 115C.