When The Flash was in the early stages of filming, a sharp-eyed fan snapped a photo of an old LuthorCorp tractor trailer.

Based on its condition (and the fact that it was LuthorCorp, not LexCorp), the truck had been mothballed since the end of Smallville but fans immediately started speculating about what such a vehicle could mean if it were to appear on The Flash.

Well, don't expect to see it anytime soon. Tonight at the Paley Center for Media, Executive Producer Andrew Kreisberg told the audience that they had already nixed at least one DC Comics Easter egg, and it too was a LuthorCorp nod.

The one that was removed from the show was apparently a digital effect inserted in one of the super-speed sequences, rather than a practical effect like the trailer.

Asked whether there had been any Easter eggs in the pilot that went over viewers' heads, Kreisberg said that they had removed the LuthorCorp reference.

"The Flash was running down the street and he literally ran past LuthorCorp," Kreisberg said. "And [the visual effects team] were sitting there like, 'Is it alright?' And we were like, 'No! You can't do that!' [laughs]"

LuthorCorp was the name of Lex Luthor's company (called LexCorp in the comics and in Man of Steel) in Smallville, a show that a small but vocal contingent of fans had hoped would be in some way connected to Arrow.