ROYAL OAK (WWJ) – Production of Batman Vs. Superman is under way in the Detroit area — and that means celebrity star sightings.

In this case, WWJ’s Zahra Huber spotted the new Batman himself, Ben Affleck, working out on a treadmill at Fitness 19 in Royal Oak.

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While he said he couldn’t talk about the Batman movie, we were able to approach him walking out of the gym just a few minutes later. He was looking well-worn from the workout, wearing a dark gray shirt, and had salt and pepper hair. Affleck was looking very buff of course, I mean he has to, he’s Batman!

Although we couldn’t get him to give us an interview, he did stop for pictures.

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By the way, Affleck’s batmobile of choice was a black Ford Expedition – and of course, he was driving.