You probably have institutional access? Elsevier publications are not generally available to the public.

I shouldn't, but it appears that I do somehow. Bug of some kind?

Yeah, I saw your reply earlier and tried it. For some reason it's not working that way.

Oops, just checked, it only works if you're logged in to Google. Editing my post now.

This doesn't work for me FYI; I get the same paywalled page. Fresh browsing session, logged in to Google account.