This is where AT&T's network investment $'s has been going...
http://thebuzzmedia.com/wp-content/uploads/2010/01/a ... »
This is what at&t's broadband network looks like now:
AT&T sued Verizon over the commercial, not because it was inaccurate, but because they though it attempted to mislead people into believing that AT&T barely had any coverage. AT&T lost the suit, because all the ads were clearly indicated that the map represented AT&T's 3G coverage.
All AT&T's 3G sites had been upgraded to HSPA when that commercial ran, so none would have been running UMTS any longer.