When Whysoserious.com/theperfectgetaway was solved, the phrase "out of time" was found.
The site features a congratulatory note from the Joker:
My kind of clown!
You're obviously center ring material, unlike some poor goons who can't complete one simple task.
Watch the funny papers in a few days for your final step in the process.
Clicking on the note links to a photo of a dead body in a morgue. The tag on the corpse's toe identifies it as Frederick Alder, the would-be carjacker who was foiled by Batman, as noted in The Gotham Times.