In the 1985 case New Mexico v. Earnest, the U.S Supreme Court addressed a dispute over whether or not an individual could be charged with driving under the influence (DUI) while operating a vehicle on private property. The defendant, Mr. Earnest, was convicted of DUI in New Mexico after he was found intoxicated and asleep at the wheel of his stationary car which was parked in his private driveway. He appealed this conviction arguing that state law only prohibited drunk driving on public roads and highways, not on private property. The Supreme Court ruled against Mr. Earnest stating that although he wasn't technically "driving" as per normal understanding of traffic laws since his car wasn't moving when police arrived; however, there were indications that he had been operating it while intoxicated before they got there - such as warm engine hood suggesting recent use and keys being in ignition position indicating intent to drive even if actual movement didn’t occur then. Furthermore, court held that state's interest in preventing drunk driving extended beyond just public areas into any location where potential harm from such behavior might occur – including one’s own driveway.

In the dissenting opinion for New Mexico v. Earnest, it was argued that the majority's decision to uphold a warrantless search of an automobile based on probable cause alone significantly erodes Fourth Amendment protections against unreasonable searches and seizures. The dissent emphasized that this ruling effectively eliminates the need for law enforcement officers to obtain a warrant before conducting such searches, thereby bypassing judicial oversight and potentially leading to abuses of power. It was further contended that there were no exigent circumstances in this case justifying a departure from established legal precedent requiring both probable cause and exigent circumstances for warrantless vehicle searches. The dissent also criticized the majority's reliance on an overly broad interpretation of "automobile exception" jurisprudence, arguing instead for adherence to more narrowly tailored precedents which balance law enforcement needs with individual privacy rights.