I think the following rules applies to Drivers in Germany ...
"If the border is exceeded of 1,6 parts per thousand, a medically psychological appraisal (kurz:MPU) is due. The appraisal is prescribed legal and does not lie not in the discretion of transport authority."
(altavista translation)
Basically, I suspect it means, if you are caught driving at this level .....
"You must be Crazy!!!!"