I feel like I'm not doing it justice so in the author's own words:
All Over Coffee strips are time bombs, moments that on the surface appear meaningless or random, but later, while going about your day, trigger connections.
The subjects are the details of life: city and landscapes coupled with observations, scenes and slivers of conversations.
Here is one of the best ones I've seen in a long time.
I found this to be a bit haunting. It really made me think. I would suggest checking it out on the web here so you can read it better.