We headedinto a spin. I tried to rhythmically pump the brakes, fighting the steering wheel. On the second tap, the pedal shot straight to the floor. The brake pressure was gone and the Volvo sailed toward the hillside as the snowplow grazed us on the left rear fender. Siegfried braced himself against the dash and looked back at Johnny in alarm. We slid down the steep hillside. Tree branches slappe