Great Article! You never want to volunteer any more information that you have to when pulled over for traffic stops or even sobriety checkpoints. Never, ever volunteer anything as anything that gives the officer probable cause can mean a search of your car.
In law schools "probable cause" is a very important concept.The Founding Fathers seemed to take it seriously as well.But in every day life it means nothing...at least not in traffic stops (unless,of course,you're "of color").If a cop wants to search your car,he'll do so...and if challenged later he'll come up with an excuse that a judge is likely to accept.