How often do you drive a vehicle not registered in your name? Every day? In Kansas v. Glover the Supreme Court will decide whether it is reasonable, under the Fourth Amendment, for an officer to suspect that the registered owner of a vehicle is the one driving it absent any information to the contrary.
Officer Mark Mehrer ran the license plate of a vehicle that was being driven lawfully. He discovered that the owner of the vehicle, Charles Glover, had a suspended license. He pulled the driver over and discovered he was in fact Charles Glover.