A two-hour police chase from San Diego to Los Angeles came to a dramatic end Tuesday when a quick-thinking truck driver turned his big rig into a roadblock. The move helped keep a person-of-interest in a murder case from getting away. The chase began when police tried to arrest the man, before he took off in his pickup truck, hitting speeds of up to 90 mph. For two hours, news networks followed the wild pursuit. Ahmed Shabaan heard on his radio that the chase was approaching, and chose to act.