"Clearly with the economy around the world growing again, passenger traffic coming back, cargo traffic coming back, we're in a much better position today than we were last year and as we look forward, we're very optimistic about the future."
VOA: standard.2010.07.23
The information is now crowdsourced, meaning Apple will judge traffic by looking at your speed and position (not to mention, millions of other commuters with iPhones).
Satisfying the regulators on both sides of the Atlantic will also not be a doddle given the dominant position of both companies in retail traffic out of their domestic markets.
If this merger goes through, not only will ATT and Verizon control the vast majority of cellular traffic for consumers, they will also remain in a position to control roaming charges to the remaining local carriers when the user is outside his home area.