Ask every neighbor to check their garage! That is often where cats go when they get out and then they get trapped in there (I only recently learned this and am now trying to make sure everyone knows). Since you didn't chase him, he's probably nearby.

And that, friends, is what we will not do. We're gonna break open the cages and let languages run wild through the streets and say "hey as long as they can communicate when they need to it's fine" and mind our business.