Accuracy is as accuracy does, Harry. As long as any reproduction is the interpretation of a human's view of the original, it may well be quite accurate to that person, and whomever is reviewing it, but perhaps not so to someone else. And, therein will always be the rub.
I have to wonder, has anyone following this thread ever attempted scratch building a model car, using only photographs, perhaps adequate measurements of the real thing (perhaps not too!)? Truthfully, to participate in the product development phase of a model car kit--or even a diecast model car (I did that for almost 3 years working as a product development/automotive research person for Johnny Lightning 2002-2005) is very much akin to scratchbuilding, except that I was in the position of having to describe to the tooling mockup makers how I wanted the mockup to look, down to the closest detail, the accurate shapes, and proportions (JL "1/64" scale diecasts weren't all exactly 1/64 scale, but had to have very similar dimensions (width & length) and weigh at least to a set standard (after all, we did them two ways: With scale appearing wheels and tires for a replica appearance, as well as free-rolling hard wheels for gravity racing!). All of this had to happen by going through someone (or perhaps several someones!) who were fluent in English, as well as their native tongue (Chinese, and the several dialects therein!). Every word I typed into my computer in English had to be translated by that contact person, into Chinese characters, so that the guys in the pattern shop could understand what was being requested, what was required. All the way along, I (and the two different co-workers I teamed up with in those three years) had to constantly (and diplomatically) make comments about the corrections needed.
But, it gets deeper! Tom Lowe (now the owner of Round2) was the owner then of Playing Mantis, parent company of Johnny Lightning, and he decided we needed to do some 1/18 scale diecasts, followed by a set of 1/24 scale models as well. The two 1/18 scale diecasts I had responsibility for were a 1955 Chevrolet Sedan Delivery and a 1948 Chevrolet 1/2 ton Panel Delivery Truck. It was interesting to note that when I got the 2X sized tooling mockups from China, they both were very good, the 48 Panel was as perfect as perfect gets--compared really great with the 200 or so digital pics I had shot of a real one--and believe me, that is a very difficult subject to capture in miniature (there are a number of very visible inaccuracies in the AMT/Ertl 1950 Chevrolet 3100 pickup, if one does serious research!). The '55 Sedan delivery came out, crack out of the box, perfect in every way save for the shapes of the front and rear bumpers--so I dug out about a dozen pics of '55 Chevy bumpers, front and rear, that I'd taken, plus some photo grabs off the internet, and with some cajoling, they nailed it!. Next up was a series of 6 1/24 scale diecast model cars, along with several 1/34 scale model trucks, all done to fit our license with Coca Cola (Johnny Lightning was Coke's preferred diecast supplier for several years back then!). A couple of those were actually quite easy: A 2004 Ford E-150 cargo van, and a 1950 Bulletnosed Studebaker Commander Starlight, with a side dish of 1957 Ford Courier Sedan Delivery. While the E-150 and the Studebaker sailed right along, the Courier had some bumps in the road--Patrick Mulligan (who was the Scale Auto Magazine Editor pretty much right out of college!) could not approve it, as there were proportional problems with the mockup. Patrick did dig into Ford's vast archive of historical photo's, and found a 4-view set of drawings of the real thing, and that made the Courier possible--many of you have seen those diecasts.
Now, bear with me while we "fast forward" to today: No longer are tooling mockups carved by hand by skilled sculptors, no longer are body planform drawings done on a drafting board--no, it's all computerized, down the sculpting (by 3D printing) of the tooling mockups. Now we have a situation! There are, on one end, people who do know what the model should look like--THEY did the research, took the photo's, did the measurements. On the other end, there are digital specialists, trying to interpret that information (and it can be voluminous!) on computers, first to get CAD line drawings, second to achieve CAD 3-Dimensional images, and third, to finally 3D print all the parts for a tooling mockup. Trouble is, the very skilled people doing all that have NEVER seen, nor are likely to EVER see, the actual 1:1 car they are called upon to develop into a model kit! So you ask, why not get someone in the US, WHO KNOWS WHAT A MODEL CAR KIT SHOULD LOOK LIKE!, to do it? Answer, if someone with all that passion, knowledge and skills exists, nobody seems to know who they are, where to find them--AND if they did find someone like that, the costs would be 2-3 times what it is at the present time (and it is all the development and tooling costs that determine, ultimately, model car kit prices folks!) Guys on this very set of forums are b****ing about the price of model kits today, as opposed to 50 years ago! Time was when a hand-carving model car kit pattern-maker was worth nearly his weight in gold! Regardless of Harry P's pontificating, this is as much a matter of artistry (just as with pure scratchbiulding) as any technical exercise. Any competent wood carver can create the casting masters for a cylinder block, a head, an intake or exhaust manifold, or for that matter, anything Tupperware makes--BUT it takes a sculptor to carve, from wood, an accurate replica of all the shapes and contours of a real car, shrunk down to say 1:25 scale.
It gets even more difficult when one is called upon to help review, critique. a set of tooling mockups created by 3D printing, and worse yet, to look at the first go-round of a model car kit test shot--it's getting better, but still it is really difficult at times to know just where to begin. Dave Metzner noted in another forum on this excellent website, just how small the staffing is at any model company today, in the area of new kit development--that's a fact of life as it is, not how anyone would want it to be. I know I've given considerable of my time, along with considerable mileage to help him with evaluating tooling mockups--each time we've gotten together to do that, we each learned something--same with model car test shots--some hair does get pulled there as well.
Whew! I've blown off long enough here--but please, Harry Pristovnik, get off of your high horse--when I see you scratchbuild something besides a square-rigged Woodie Body for a Rolls Royce, and get it accurate, right, then I might accept you as someone who really knows something about all of this.
Until such time, I would suggest you consider moderating your own tone of voice, your rhetoric--"It ain't as easy as you think, Boy!"