I said "limitations". in "" because i don't actually mean ps3's limitations, rather, real time graphics limitation, or today's technology's limitations.
Imho, that kind of detail up close is one generation beyond the next.
I might be wrong, but this is not a matter of making cars look photoexact with lightning and clever use of textures, in which polyphony are the best at: this is ridiculously high resolution environment mapping and huge amounts of geometry. Huge.
See, this is a ferrari i modeled some time ago (pain in the ass, really, i'll never do it again)
the model itself is using some 40.000 poly's, but is rendered with a 5 subpatch value (ie. 40.000 x 5).
Looks good from here, but if you dare place the camera as close as the trailer does on that mazda, you'll start seeing edges and poly's all over; you'd be able to count them.
Unless the footage is hiding imprefections and edges, that mazda uses more (a lot more) than 200.000 polys.
I'd say 300k at least.
Doable for a tech demo, but in game ? with at least 6 300k polys cars on screen ? i don't think that's possible yet.