 Complete the following phrase:  Changes in the Formula One regulations led the company to shift the big engine to an Indy car, the 1952 375 Indianapolis. Three new Weber 40IF4C carburettors brought power output to 380 hp 279 kW, the wheelbase was lengthened, and the chassis and suspension were strengthened. Although the car performed well in European testing, it was not able to meet the American challenge, with just one of four 375s even qualifying for the 