You didn't forget this one because it is pretty new. Like 24, this is being rapidly shut down via statutes or case law noting that it is inaccurate but in the best interest of the public:
It is not uncommon to challenge the machine which provided the sample for the breath test and request the source code. A friend of mine has a State Troper father in Florida and they recently had a very public slew of dismissals. The law has since been changed. Lawrence Taylor had a really good analysis of the spaghetti code in these machines on www.duiblog.com.
Bob

