I was recently in a car where the driver had to have a “blow machine” in the car because of a prior DUI. I was actually scared each time the machine went off as the driver (at this time, driving on the freeway near 50 mph) had to lift up the contraption and blow a certain way or the machine would not shut off.
This particular time, he had to blow twice as the first time didn’t register with the machine. There is a certain technique that has to be followed to use the machine, and in the meantime, you are in heavy traffic, driving at a good rate of speed and trying to get this machine to be quiet.
I feel these machines are a worse hazard than cell phones and texting ever was. If you do not blow right into the machine, the automobile horn will start. You have to keep looking at the device to see if you “pass” or “fail.” These machines are also very expensive to maintain on a monthly basis. There has to be a better way.