A Dallas school district teacher was arrested after a slow speed chase that lasted more than 90 minutes.
An officer said Donald Johnson walked erratically to his car at a gas station and then drove off as the officer tried to stop him.
The officer said Mr. Johnson was smoking crack in his car during the slow speed chase near the Dallas Convention Center.
Johnson eventually drove to a dead end, but refused to get out of the car.
Officers used a Taser to arrest him.
He is charged with evading arrest and possession of cocaine.