Breathalyzer

I was at Walgreen's today when I saw something that totally irritated me. In the car parked next to me was a young girl (maybe 12 or 13) with what appeared to be her grandmother. The grandmother made a move that caught my attention out of the corner of my eye, so I turned in time to see the young girl blowing in to the breathalyzer kit that was attached to the car. After the girl blew in the piece of equipment, the grandmother started the car and proceeded to pull out. I quickly grabbed my cell phone and made a report to the police. As I was headed back to work, I saw that the police had acted quickly and they had the car pulled over only a few miles away from the Walgreen's. It is absolutely crazy for the grandmother to put that young girl in that situation. And why wasn't that young girl in school?