Affirmed. See Whren v. United States, 517 U.S. 806, 819, 116 S.Ct. 1769, 135 L.Ed.2d 89 (1996) ("For the run-of-the-mine case, which this surely is, we think there is no realistic alternative to the traditional *413common-law rule that probable cause justifies a search and seizure.").