And yet this article reports there have been sightings. Including one by state patrol....
snip.....During the press conference Friday, Kunze said he has received reports that the couple's Marquis has been spotted in Ada and elsewhere in northwestern Ohio, where authorities are searching for the vehicle. The license plate number is PDG13E.
Chief Deputy Randy Dodds of the Logan County Sheriff's Office, however, told the Daily Citizen that authorities suspect Littleton abducted the elderly couple on his way to Tennessee where he has relatives.
"We have reasons to suspect" the three of them are traveling southbound, he said.
"We don't suspect the Russells went voluntarily," Dodds said. He added that, during a routine inspection for stolen vehicles, a state Highway Patrol trooper saw the Marquis at a rest area in Butler County on Wednesday night around 11:40 p.m., but the trooper didn't make contact with the occupants.
http://www.urbanacitizen.com/main.asp?SectionID=3&SubSectionID=5&ArticleID=156494