When the first Rage game was announced, it was a big deal. id Software, who had established themselves as industry legends, hadn't made a game in ages, and this was their jump back into the fray. The jump fell flat, unfortunately. Players were bothered by an empty feeling world and lackluster ending. The enjoyable combat was scattered between an open world of nothing, and loading screens were sprinkled between them.
id Software, now under Bethesda and in collaboration with Avalanche Studios, intends to make right what once went wrong. Tim Willits talked about how they've learned from before in an interview with the Official PlayStation Magazine (July 2018 Issue 150):
We had the megatexture technology, and we had the open world, but it was really kind of two different things. It was the wasteland, and you then loaded another level, and then you were in your first person combat. Well, that's all gone now. You're just in the game. Everything is seamless, and together, and you can engage in combat the way you want. The promise of Rage is delivered in Rage 2.
We somewhat saw what this was like with the E3 gameplay trailer, which featured the player driving along the road and into an encampment full of enemies. That would certainly solve one of the issues of the first game, if they can nail down a fluid way to work between the two.