Even just interstate full self-driving (if it were really full, i.e. no supervision) would be a big win for a lot of people. I live about an hour from a major city. I could do most of the drive on interstates (and probably 75% on non-urban roads). And that would be a huge win relative to driving myself.

For actual long distance mostly interstate drives? A huge win. While there's been some focus on this at specific car manufacturers, probably more interesting overall than the urbanite who wants a ride home from the bar.