The two action stars unveiled their latest film Escape Plan at Comic-Con, saying they were drawn by the passionate fans who attend the pop-culture extravaganza.
Arnie characterised the Comic-Con crowd as "the most dedicated fans and the most passionate about the movie business".
While Sly said San Diego is "a real movie town," referring to it as "the new Hollywood".
Escape Plan centres on two ageing prison-escape artists who are locked away in what is called the world's most secure prison. The film opens in October.
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Expanding your horizons isn't possible right now. There are lots of mundane responsibilities that require your attention. Neglecting these duties will create enemies. People are relying on you to pull your weight. The sooner you tackle your work, the faster you will be able to enjoy some leisure time. Catching up on your reading, playing a sport or watching a movie will help you wind down. There are worse things than being held captive by a regular routine.More