For Your Information
Recent problems with the fleet of Chevrolet Impalas in use by the Philadelphia Police have been traced to a mechanic who did not follow prescribed maintenance procedures. The cars, 150 in total, are being recalled to Fleet for the correct procedure to be applied. As you read this only 24 or so cars have not been fixed.
These problems involved the frames of the car with the possibility that the frame could dislodge from the body of the car.