 Complete the following phrase:  With a ban on high-mounted wings following Graham Hill and Jochen Rindts accidents in the 1969 Spanish Grand Prix meaning low grip was more of a problem than ever the 63s were pressed into service two races later at Zandvoort. Hill tried the car in the first qualifying session, but after going nearly four seconds quicker in his regular 49B, and declaring the 63 a death trap, it was left to Lotus test driver John Miles to give the car its debut at the French GP, retiring after a single lap with a fuel pump failure. At the 