Ref the recent chit-chat, what would people say is the most accurate physical representation of a real car in AC, as in how it drives and feels? Accepted, it probably doesn't actually feel anything like driving the real car due to a whole host of factors (our giblets sloshing around inside out bodies, fluid gushing around in our inner ears, and fear, real fear, to name but three) but what's the closest facsimile we've got so far?
I'd have to also go with one of the better made racecars. If you have enough data and know-how, you can get them damn close empirically. But nothing really can substitute pulling G's on the track in the heat of the cockpit.
Honestly I think some of my roadcars come close simply because the result is achieved in a legitimate manner from the same factors with which it's achieved IRL for the large part. It's not like that for most mod cars of the same chassis', so I think mine are a little closer than the average roadcar mod. More-so after I update like half of them soon to fix some noticeable issues, but nonetheless.
Here's the thing though, just because it's empirically relatively correct ie: do X, and Y result happens to 90%+ accuracy, doesn't mean it actually feels right. Feeling is IMO 50% sound, 25% visuals, 25% kinesthetics. We're usually lacking on sound and visuals aren't perfect most of the time. Think about that for a bit.
For roadcars it gets pretty difficult to produce an empiric result (R34 GT-R is a classic example due to electronics) due to various factors like weird systems they have, bushing flex or strange suspension geometries or springing options and it doesn't guarantee it'll be something that'd convince most people kinesthetically even when you do get the wheel to articulate correctly and the forces to be the correct magnitude in the right spots.
E30 is a good example, it's actually one of my most accurate cars probably. Yet due to the way sims generally handle pneumatic trail, it just doesn't feel right without some minor tweaks. As in I'm pretty sure the rack end forces are objectively wrong without modding the steering geometry. Car might behave correct output wise (The trail adjustment doesn't do much at all to the actual performance or behavior) but to the driver it'll feel completely off.
Imagine if the best simulated car had 0 FFB no matter what you do, had no sound and forced the graphics to be with only flat colors running at 30FPS. Doesn't matter how good the car is, then.
As an anecdote, some of the more accurate cars in sims have the drivers who run them IRL heavily disagreeing on the behavior, with one guy saying it pushes way too much, other guy saying it's way too loose. Too many factors to explain why, and that includes how their real car is set up as well.