Upgraded to newest engine!
-Graphics are hugely improved, including a completely new lighting system
-Physics performance is hugely improved. Physics engine now runs on multiple CPU cores.
-Completely overhauled bike physics and handling
-New weapons
-New enemies
-Completely overhauled almost every mission
-No more "no weapons" missions
-New post-apocalyptic city region of the map
-Overhauled critical attack system
-You can now choose to swap out weapons for new weapons recovered along the race
-Fixed hundreds of other bugs and made 100s of other improvements.