Right, and even if you don't need it for racing, rewind is very useful for speed traps, danger signs, and especially some of the trickier placed boars.
Are you driving automatic? I don't know, I've never had a car outpace me unnaturally. In fact, most are quite easy to outpace, providing you have the same (or better) car.
No, and I'm not sure if saving replays has ever been a thing in the Horizon series. I know that I've been disappointed about that before.
Nothing specific has been announced yet, I think.
What confuses me is how do you people see all the weekly challenges at once? I though that they were only revealed sequentially?