That is, I'm going to say something other than "see Redline immediately, it's great." Mind, that statement still stands.
Last weekend I invited about a lot of friends of mine out to see Redline, which is running in New York City as we speak (dub, probably projected off a Blu-Ray), go see it right now before it's gone! Everybody in attendance loved it. I don't think enjoying the movie is an "anime fan" or a "not anime fan" issue, I think it's a matter of whether you like to be entertained and you don't mind if your entertainment isn't too serious.
And I want to draw a line here. "Not too serious" doesn't mean "not too good". A lot of people have seen Redline's breezy attitude and beautiful visuals and gotten the impression that the movie's some shallow light show and that its story isn't worth telling. That couldn't be further from the truth.
The theatrical showing marks the third time I've watched this movie in its entirety. Though I wouldn't maniacally drive myself to watch Redline over and over again, it hasn't gotten old for me at all. The movie is so alive, so densely packed with character and world-building detail, and none of it is directly spelled out. Really take this movie in. Look all over the frame. You'll find things. They've built a universe here. It's a universe gone completely mad, but that's my style anyway.
It's not unusual for anime to have large amounts of backstory, but what's unusual about Redline compared to its peers is that the storytelling is almost all visual. This is an especially sharp contrast because ironically, anime does a lot of telling rather than showing. It's just always much cheaper, especially in animation, to say what happens than to show it happening. Think about it in Durarara!! when they go to those chatrooms, or anything in Fate/Zero, really. And this isn't just in novel adaptations: look at how shonen anime love to explain the mechanics of the battle taking place-- be it a battle between ninja, cars, or spinning tops-- in technical terms. We could talk about all the different examples for hours, but then we would be anime exposition characters.
What I'm saying is that Redline, contrary to many reports, has quite a complex universe and fleshed-out principal characters: it just tells us the things we need to know and quietly shows us much of the rest. It hides away points in the background at blink-and-you-miss-it moments that an anime TV series would spend two or three episodes on. This movie offers you so much in every department that you're not even going to see it all in a single viewing. In the conversations online I've seen a lot of anime fans come to Redline looking down on it, leave looking down on it, and that's their loss. Don't miss out yourself: if you can't see it in a theater, the Blu-Ray is out in a week or two. Enjoy.