When a police officer says, "I'm gonna have you take a few tests," here's what he's really doing. Here's what you need to understand about this trick. You're never going to pass these tests. It's kind of a trick statement to kind of lure you to sleep to make you think that if you successfully perform these tests, he's going to let you drive away when all he really wants you to do is perform the test because then he gets to take his report and check the little boxes of all the little minor things that you did wrong so that he can build a case against you for DUI. He wants to give you a test so that he can mark the results so that he can show that to a judge and later have you convicted of a DUI.