Want to know what to do if you're pulled over by an unmarked police car? We have some tips (read the whole thread for all the tips).
Slow down, drive in a safe manner to the nearest well-lit, populated area. If this is not possible, do the following: (Cont'd) ^dr

•Lock all doors, pull over safely and leave your car running.
•If you have a cell phone, take it out immediately and in full view of the person who has pulled you over and call 911.
•Calmly give the 911 dispatcher your location and express your concern. ^dr (2 of 5)

•Ask the dispatcher if they have had any communication with an officer about a stop in your area and ask them to relay your concerns to that officer.
•As they approach, roll your window down an inch or less and ask to see the officer’s badge and warrant card. ^dr (3 of 5)

•Look for inconsistencies in the officer’s uniform. Uniform police officers wear police service insignia and have strict dress code standards. All officers should be able to provide you with the name of their service and detachment, badge number and rank. ^dr (4 of 5)

•If you remain uncertain that the person who pulled you over is a police officer, ask him/her if you can proceed to a more populated area. If he/she agrees, tell the 911 dispatcher where you are heading to and proceed. ^dr (5 of 5)