Revealing mistake: When Blake and Gordon watch Bane on TV during Gotham's siege, a grey (sometimes white) square is reflected on Gordon's glasses. It's either a lighting screen or the proof that the TV is turned off and the image on it is added on post-production.
Revealing mistake: During the party, the second time Gordon gives a speech praising Dent, a lighting screen is reflected on his glasses, which disappears in opposite shots.
Revealing mistake: When Bane first breaks into the stock exchange, he forces one of the guards into shooting his gun. Two mistakes: there is no flash or muzzle flare, and the gun has an insane amount of recoil. It's not a cannon, it's a 9mm. It's also not the guard being startled by Bane: Bane is the one holding his arm.
Chosen answer: He hides it away, presumably in the modified shipping container that we see him retrieve it from later on, once he returns to the city from captivity. Having left the Bat there so that he can use it if necessary, it would make sense that he'd also prepare somewhere to hide the Bat-pod when he changed vehicles to avoid having to leave it for the police.
Tailkinker ★