Yeah, they're all blank. But it is zoomed out to show both A and B pins on the map. It's like the map is pulling my location (as the "from" point - pin A) from my IP address or something, because I haven't given it any indication of my location. (I even tried logging out of my Google account, clearing my cache and cookies, etc.)
When you preview the page, is it showing an A and B pin (with A being your location)? I have no idea why it's doing this.