Police have much more legal power to stop, identify, search and harass you if you are in a car. For instance, your 4th amendment right against unreasonable sear

Police have much more legal power to stop, identify, search and harass you if you are in a car. For instance, your 4th amendment right against unreasonable search and seizure is nullified by forced identification laws and implied consent. A simple pre-textual stop for "Possible intoxication" makes it easy to target undesirables for searches and forced identification. This is not nearly as easy on public transportation or for pedestrians. Terry stops have much less power when you don't have a hundred traffic laws and licensing requirements that you can get a car driver for. In addition, you can't revoke someone's walking license if they don't pay child support.