He's at Graceland now. (Read what he's written by checking the link above.)
He gets so many tickets to give away for every one of his games like most players do. So what he'll do on Twitter is say I'm at such and such location in a certain city and the first 2 (or 3, whatever) people who touch me get tickets to the game. And he has over half a million people following him on Twitter so he always is amazed by how quickly people get to him.
Well he wrote that here -- I'm at Graceland and the first people who find me... -- so within a few short minutes, people got to him on the Lisa Marie.