To perform a dangerous or extreme maneuver while driving a car, usually involving a moving U-turn, particularly while in heavy traffic.
Derived from the cool 70’s television private detective show: Rockford Files, staring James Gardner. He drove a Firebird.
I missed my turn so I had to do 'a Rockford' in the middle of the street.
The traffic is stopped in this lane. Hang 'a Rockford' and go another way.