Yeah, that's why they make sequels, of course!
A rockstar representative did say that you basically play from start to finish without load screens, so that's a huge improvement not only to GTA, but to gaming all together. Many of you probably remember the older games, half the time you would see this very familiar text "LOADING, PLEASE WAIT" or something simliar With IV, this will be a thing of the past!
Also, this applies to Midnight Club Los Angeles, another game created by Rockstar which also uses the RAGE.