what if the shop is empty?

This miiiight be an artifact from taking a picture from a moving car. A narrow pole in the foreground would become a wider blur due to the shutter time. It doesn't seem like that happened here, there's not horizontal streak.

Google maps also used to do this when stitching together multiple photos from the multiple cameras to get a panorama picture. It just fades the sides of the pictures and overlays them, and you get something like this.

It looks like the bricks on the top front of the building and the sign are photoshopped in

If you zoom in, those bricks are much bigger than the bricks around the garage doors and on the side, and the transition is rounded and happens in the middle of bricks. Whoever made this must not have masked out the pole (assume that's also legit) because the brick texture and the bottom of the sign go over it

I think it's a thin object like a street sign that is reflective due to the high angle of incidence from the camera

I bet that’s a super mellow dive bar.