Ben Affleck is now in Detroit with the likes of Henry Cavill and Gal Gadot to begin his filming for the highly anticipated BATMAN VS SUPERMAN. Affleck was tracked down by a local Detroit CBS news affiliate, where they found him working out at a local gym visibly spent after an intense workout. For months now Affleck has been logging in serious time at the gym and with cameras ready to roll it's clear that he has taken the challenge of filling out the famed cape and cowl very seriously.