I remember in the very early days of Facebook Pages, as soon as they came out I created "Honda" and "Subaru", both with a substantial number of Likes (they were called fans back then, I think?)
I kept my posts on those pages strictly factual, and really just parroted emails from the two companies and occasionally asked for the audience's opinion.
After about a year both of them were shut down by the respective real car companies, and I tried to email their PR about how if they can be reactivated I could just hand them over, since the fanbase was relatively large at the time, but neither ever responded to me. Oh well.