Cleveland man locked in Cadillac for 14 hours

> He tried punching and kicking out the window, but he couldn't break it.

It's good to look for tools inside the car to help with breaking the window. The headrest could be used (though there was a Mythbusters debating this). The tire iron is good also if it's possible to access the trunk through the back seat. It might also be a good idea to keep a screwdriver or glass breaker in the glovebox.