It is a known fact that more vehicle accidents are occurring because of distractions brought on by technology, especially cell phones.
However, even though this commercial uses texting as an example, it reminds the audience the dangers of being distracted or loosing focus for a split second. Therefore it reaches out to all of society and our potentially distracting technology.
In addition, as Lauren mentioned, the message is presented in a short span of time, yet it gets the point across. On top of the obvious pathos and logos involved as death caused by loosing control of a car after texting is very real, the commercial makes use of ethos.
Because AT&T, one of the largest cell phone companies, delivers this message against texting and driving, it makes the message even more believable. If a cell phone company is bringing awareness to the damages that their own product can cause, the message becomes more sincere.