The police have no right to stop you if you aren't violating any laws. The police have no right to demand a driver's license. You must only show a driver's license iff you are a driver and therefore have a contract with the dmv. Your instrument of travel, whether by foot, animal or mechanical locomotion, is a right and my not be deprived if for person use of traveling from point A to point B. A driver is a person of hire. A motor vehicle is a means of locomotion used by the driver. If your means of locomotion use id for personal travel, then you aren't a driver. If your means of personal travel is not a motor vehicle, which it isn't if you're not for hire, then your means of transportation is personal property. Your use of public roads is a right under the 5th amendment due process clause and the 14th amendment right to interstate travel.