So the billboard on the right is a Bell advertisement for 3G service in Canada. With the new Bell brand, the "B" is used to create the "M" in "More 3G".
The billboard on the left is for a local car dealer. You'll notice that there appears to be a "M" on the lower left in similar fashion to the Bell ad.
Coincidence? What do you think?
Or is there something obvious I'm missing here.