Of course, all that does is limit, not eliminate, the amount of proof. And it assumes that, after drinking a few you'll have the presence of mind to say only that and then shut up - most sober people can't.

I once saw a video of a man sitting in an interview room at a police station after having been pulled over for a DUI. He was following this advice, asking for his lawyer (by name). The video alone would have been enough to convict him.

And of course, none of this will help much with the FAA. In most (all?) states, the pull-over and the breath test refusal will result in an administrative suspension of driving privileges - a "motor vehicle action" reportable under 61.15, no matter what happens on the criminal end.