[drewmol]

There are substantial protections against unlawful search and seizure in the US constitution which are also supported by subsequent legal precedent/case law, often specifically referencing private property, dwellings, persons, etc. An arrest warrent does not necessarily allow police to go barging in to private dwellings to enforce it. Persons in vehicles were generally not explicitly referenced in the law and a slow encroachmemt on executive power has led to 100+ years of case law that eroded those protections when it comes to persons in vehicles, especially on public roadways. This has led to vehicles in public being a place where police have a lot of legal leeway and a common place for police to enforce warrants, etc. for minor violations and a common place for police to fish for possible crimes with less risk of explicitly violating a persons rights (at least in the eyes of the judiciary).