A traffic stop on Interstate 20 nets more than 50 pounds of marijuana, but has police looking for the couriers. A Gregg County constable stopped two vehicles for speeding on I-20 near Kilgore, and as the officer got out of his unit, the cars sped away. The cars were found later at a gas station, and in a nearby dumpster, 51 pounds of marijuana were found in several bundles. The drug runners are still on the loose. Its the largest seizure of marijuana in Gregg County in 2 years.