I have no idea, but everyone who wants to ride Kingda Ka, remember what I have to say for the rest of your life!
TTD ride time: 28 seconds
TTD trains: 6
passangers per TTD train: 18
potential ride line wait: 6+ hours
Kingda Ka ride time: 60 seconds
Kingda Ka trains: 4
passengers per Kingda Ka Train: 18 (I believe)
So that means that the line wait could be over 20 hours!