I admit that I may have a problem. I am dedicated to (perhaps obsessed with) the pursuit of a legal theory that satisfactorily squares the doctrine of implied consent with the Fourth Amendment. A thousand Westlaw searches later, I have yet to find analysis such an analysis by a court. So I was a little surprised when the United States Court of Appeals for the Eighth Circuit explained earlier this summer that the Supreme Court determined more than thirty years ago in South Dakota v. Neville, 459 U.S. 553 (1983), that implied consent testing carried out under threat of license revocation comported with the Fourth Amendment. Did I miss something?