If you're traveling for business and you hit a "dead zone" typically for phone and radio station of your choice use caution. You see, sometimes when a man has been on the road for 3hrs he gets bored and will forget himself and do things he typically may not do.
For example.
If you're driving as mentioned above, and you're going to pocket dial a coworker, don't do it when you're having your own personal American Idol audition going on in the cab of your ride. He has speaker phone, and on that day, cell reception isn't going to be a problem.
That's right....in the spot I couldn't make a phone call for $1mil any time I drive through it.....I pocket call a coworker, when I'm singing a tune and it stays for 10 minutes.