For 24 hours, Powell's whereabouts were unknown. Law enforcement sources tell Salt Lake City's Deseret News that the car was returned with several hundred miles on the odometer, but no GPS data was stored and they don't know where the car was taken.
"We have an open, standing invitation for him to come and talk to us," says West Valley City Police Capt. Tom McLachlan.
Police have many questions for Joshua, 33, who left Utah with his two young sons over the weekend to spend the holidays in his hometown of Puyallup, Wash., with his father. Powell is still refusing to be questioned by authorities about the camping trip he says he went on in frigid conditions with his boys the night 29-year-old Susan Powell disappeared.
Feared DivorceLate last year, Susan Powell told friends she was worried what would happen if she tried to divorce her husband, who is now named as a person of interest in her Dec. 6 disappearance.
According to friends who spoke to the Salt Lake Tribune anonymously (because they have been told by police not to discuss the investigation), Susan set up a separate bank account and had written an informal will.
She ultimately decided to stay in the marriage and hoped to make the relationship work, friends say, but her husband was upset when he learned about the secret bank account. At Susan's insistence, the couple eventually got marriage counseling, say the friends, and the relationship seemed to improve.
As the case proceeds, an anonymous donor is now offering a reward of up to $10,000 for "original information" leading to the discovery of Susan Powell. If her disappearance is a crime, the reward will be given for information leading to an arrest.
Police are asking that anyone with information contact the West Valley City Police Department at 1-801-840-4000.