I'm going to be optimistic about GrandCobra's post and use other games as examples of what and what is not possible. Not all of it has already been seen but it doesn't mean it can't be done.
Sorry for the format guys but I didn't know of any other way of breaking this down to it's objective parts.
From what I've seen tyres get deformed and can also tear & shred during massive crashes like in NASAR, the deformation of super-cars is as real as it gets.
- tyre deformation already done (Forza 3).
- unsure about tears/shreds...any examples?
I've also seen rain in action and it truly blew me away. The individual droplets of rain pouring down on the windshield actually cast shadows on the top of the dashboard and the physics during rainy conditions become ultra hard (as in extremely real in simulating driving on a wet road).
- Colin McRae Rally 3, PGR4 and Ferrari Challenge do rain pretty well already including physics
- not sure if dashboard shadowing has been done before
In WRC the tracks gradually deform from your tyres and it stays that way all in real-time.
- not new technology i.e. Motorstorm tech demo and implementation to some extent in Motorstorm and Motorstorm: Pacific Rift
When it starts to rain the ground gradually becomes very muddy causing it to stick to the side of the car and it also builds up on your tyres.
- cars getting dirty is old technology
- debris/grass/dirt tech seen in F1:CE
Barriers are fully deformable and you can fly well off the course,...
- nothing new here
...not to mention that wipers can be activated to wipe off mud on your windshield.
- been done plenty of times before including Colin McRae Rally 3, PGR4 and Ferrari Challenge
Lighting has been greatly improved and the graphics of every track in the game has been improved 20x's over from the current build you guys are seeing on mimiximax's YT channel,...
- exaggeration to get the point across that it does look better?
...PD have also over come those fuzzy shadow problems.
- hardly surprising, is it?
The showroom looks very different (but it's only a test) and the textures within every cars cockpit have been vastly improved,...
- did they need to be?
...hand cross over animations have come back, but this time the animations look very solid and incredibly real. Animations for gear shifting looks 10x's better
- in the whole scheme of things not that much extra work to implement but again maybe exaggerated to make the point it looks better?
...and there's no more hand clipping with the steering wheel.
- I'm sure there is but you just can't see it.
There's now a new animation for scrolling down windows...
- done in Test Drive: Unlimited
...which brings a new element of PD's GT5 engine, 'dynamic sound' meaning PD can accurately capture the sound of a car from the inside with the windows scrolled down having sound coming in from the outside at the same time. Cars zooming by with your windows scrolled down sounds very very real...
- occlusive sound already done in SOCOM: Confrontation and MAG
...and during rainy conditions rain can enter your car if your windows are scrolled down (that just blew me away seriously).
- I have tremendous problems relating to this i.e. why would they put it in anyway?
Grass can tear and flick up in the air and muddy grass gets stuck on your tyres and suspension.
- grass flicking up has been done already (Ferrari Challenge)
- sticking on suspension seems unlikely...another why add such an insignificant feature?
During night races rain can still be seen with your headlights reflecting light off of the rain drops. Animations for switching you wipers on have also been added.
- wipers work on previous racing games
- animation just an extension of gear changes
There...sounds a little more plausible dunnit
