Never ever blow! Just use your right to remain silent and dont say a word. They will lie to you and try to make you belive if you do not do what they say you will get in deeper shit. I know a guy who has one Dui and about got another but used the advice of his lawyer when they tried to get him the 2nd time. he never said a word! not one. When they told him to get out of the vehicle he did and just leaned against his truck. After that he acted like he was a mute. They took him to jail and in the morning let him go. They had nothing. I agree with the rest of the replies also but 4 miles? Thats some shitty luck. Good Luck man and what ever happens life goes on. Peace.