The Future is Yesterday!
Well, remember back when Superman went into the future and couldn't get back? Well, Lex Luthor was wondering about that too, all the way back in 2000.
Of course, the Luthor drone eventually finds Superman after searching for a little under a million years and then......
After killing Superman, the Luthor drone spent a week in the Bahamas, sipping Pina Coladas and getting caught in the rain. Then it went on a 1,000 year book tour selling it's new book, "I killed the Man of Steel and all I got was Eternally trapped in a hunk of metal with thousands of intergalactic murderers."