I looked everywhere and could not find the necessary forum and this is slightly unrelated to radar detectors but I really need an answer. Today I was speeding on a secondary highway and I pulled up to a cop driving a black unmarked charger (no light bar just a spot light) who was also speeding and once I noticed I immediately braked and slowed down. He did not pull me over but went behind me and from what it looked like he pulled up my record and then drove off. Cops have to physically pull you over and document the ticket am I right? They can't just mail you one with no proof other than their own personal eyewitness? I live in TN. Any info would be really appreciated.