1978 Swedish Grand Prix, Anderstorp.  

The rear end of Niki Lauda's Brabham BT46/B Fancar.  Niki Lauda won the race, Ricardo Patrese finished 2nd and Ronnie Peterson finished 3rd.  Mario Andretti started from pole, Niki Lauda set the fastest lap.  

The Brabham BT46/B was banned  for the next Grand Prix.