The 1978 Italian Grand Prix at Monza started badly for Peterson. In practice he damaged his Lotus 79 race car beyond immediate repair and bruised his legs in the process. Team Lotus had a spare 79, but it had been built for Andretti, and the taller Peterson did not fit comfortably inside. The team's only other car was a type 78, the previous year's car, which had been dragged around the F1 circuit that season with minimal maintenance.