The Wayback Machine got a snapshot of it and as of this posting you can still read it live on MSN.
Interestingly, Wagner's author page on Road & Track is still up, and included a link to the article when I started writing this, but said link is now gone. I couldn't find a social media account for Wagner with recent posts (other than twitter, which is now so hostile to guest viewers that I don't even bother with more than a cursory glance, since you're served a vomit of random posts spanning the last seven years instead of, you know, today).
Really curious what the story is here, but the most likely explanations seem pretty apparent based on the article's content. Scathing commentary on wealth inequality, combined with close and candid photos of people who, as Kate mentions early in the work, have 'bought their way out of public life' and would most likely prefer to stay that way. It may have made it past the editor's desk, but someone with some pull didn't want the article to remain published in its original form.
Below is the full transcript I copied from my still open tab. This includes image alt-text, and anything else that "highlight all + copy" grabbed.
The moment this goes back up on the webbed site I'll delete this post. Please drop a comment here if it does.
The MSN host of the article is now down. Wayback is still up. Safe to say at this point that this was 100% intentional and it's not going back up. See also this screenshot from hellsite (stolen from xkeeper thanks x).
Only other thing I have to say about this is: Please stop watching F1 lol.
My comment remains the same lol
tl;dr the Editor In Chief says he didn't know about the article because it was only going up on the website, and it wasn't a good fit for the publication or whatever. Plenty of ways to interpret that, I don't care to speculate past a "sure, whatever dude."
EDIT: If this wasn't a more serious thing I'd make a joke about this being just another case of motorists having no regard for cyclists, but even that is just another extension of this class war bs.