That was the train station, which had a total of 4 of those ads.
Then, 2 public buses in a row had Qualcomm ads on their sides.
The ads from Qualcomm have proliferated more than any other ads during all of the years that I have lived in the Boston area. A few weeks ago, I published a blog page over and over about suicidality triggered by a Qualcomm ad in a train station. Not only have the Qualcomm ads proliferated since then, more corporations have distributed ads that sexually harass me and that promote suicide in train stations.