 Complete the following phrase:  The 1957 Pescara Grand Prix, held on 18 August 1957, was the seventh, and penultimate round of the 1957 World Drivers Championship. The race, which was the only Formula One World Championship race at the track, is best remembered for being held at the longest ever circuit to stage a Formula One World Championship Grand Prix. It was also the first of the two consecutive Italian races, and after the subsequent 