Watch the PGR4 teasers. They look like these screens if not better (motion blur awesomeness is not visible on these screens).
I sen the trailers and there very impressive, just like the PGR3 ones were equaly impressive.
PGR3 showed nice enviroments aswel.
I would love to be proved wrong here, i really would but im not getting hyped up until i see gameplay. PGR3 let me down BIG time in the grpahics department, and IMHO i can see this going the same way.