It's a car blog, so I think most of their readers already know there was never any such Olds model as "Incas", so it must be a very rare prototype.
The point of clickbait is that the link will get reposted to all kinds of places online, with a headline that intentionally misrepresents the article to those readers and fools them into clicking.
(Original headline was “The 1986 Oldsmobile Incas Had The Wildest Dashboard You’ve Never Seen.”)