This building, located at 5335 O Street, Lincoln, NE, is currently operating as a Subway, but prior to that, I’d bet you it was a Diner. I’d guess from the ’90s retro-diner revival, and almost certainly an on-site construction. Unfortunately, this was just a drive-by shot, so I didn’t get good detail, but it has a corner entry, flanked by round glass block, and topped by a winged clock.

Poor quality Google Streetview shot to flesh out the side of the diner I wasn’t able to photograph.