Once upon a time, drive-in movie theaters were all the rage before being mostly supplanted by locally owned brick-and-mortar theaters, which were then replaced by franchise cookie-cutters. But with the coronavirus pandemic forcing those apex theaters to first reduce audience sizes and then shutter their doors completely (albeit temporarily), the bygone era of drive-in movie theaters is experiencing a resurgence. If you've never been to a drive-in movie, here's how it works: It's pretty much right there in the name. You drive out to a parking lot or a field that'…