St. Patrick’s Day weekend wasn’t all about the drinking and driving for the San Diego Police Department. They debuted their new device that test drivers for drugs. The Dräger DrugTest 5000 machines detect for a total of seven drugs, including marijuana. Drivers are given a mouth swab to put in their mouths for four minutes, dropped into put into a solution, and then voila - police get an instant toxicology report. It's not perfect, though. The test can detect the presence of drugs but not the level of drugs. If you test positive for any of the seven drugs they test you for, drivers will then be required to take a blood test to get a more accurate reading. Don't forget: You always have the right to refuse the test, too. And while we don't have all the details on how this new Drager was created, it seems like you may want to pass on any new drug test before it's fully vetted.