Utah Highway Patrol troopers say when they made a traffic stop Thursday morning on Interstate 80 in Summit County they found a rather nervous couple on their way to Peoria, Ill. -- and a whole lot of pot.

In all, troopers, assisted by a drug-sniffing dog, found the man and woman had 351 pounds of marijuana neatly packaged in the spacious trunk of their Lincoln Towncar, said UHP spokesman Cameron Roden.

The car had been pulled over about 7:20 a.m. for a lane-travel violation on eastbound I-80 near Coalville. As a trooper spoke with the driver, a 63-year-old man, and his 49-year-old woman passenger, he noticed they seemed agitated. Their stories also were inconsistent with each other when they were separately questioned, the trooper claimed.

The trooper then asked for a drug dog. The dog alerted several times as it circled the vehicle, and the marijuana -- in 13 packages of brown, quilted wrapping paper and plastic wrap -- was found in the trunk.

Roden said the driver told troopers that he was en route from Las Vegas to Peoria, Ill.

Both suspects were booked into Summit County jail on felony drug charges.