1. Police officers were conducting a sobriety checkpoint at which all cars are stopped, and drivers were asked for their license and registration. When Dan was stopped at the checkpoint, the police officer used a flashlight to illuminate the contents of his car. While doing so, the officer found an open alcohol bottle partially wedged inside the passenger seat. It is a misdemeanor to drive with an open alcoholic beverage. They arrest Dan and seize the bottle. At the trial, Dan wants to suppress the search. Is he likely to succeed? Why? For purposes of this question, assume the sobriety checkpoint was legal; do not analyze its constitutionality. (IRAC FORM)