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1950 Formula One Grand Prix race at Silverstone, the first race of the new Formula One World Championship, but problems with the engine, such as cylinders cracking, buckling of connecting rods, and piston failures, led to the postponement of the race début.<unk> 1950 Formula One Grand Prix race at Silverstone, the first race of the new Formula One World Championship, but problems with the engine, such as cylinders cracking, buckling of connecting rods, and piston failures, led to the postponement of the race début. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Mays drove the car for several laps.<unk> Mays drove the car for several laps. The demonstration was witnessed by Princess Elizabeth, later Elizabeth II, and her husband, Prince Philip, Duke of Edinburgh.<unk> The demonstration was witnessed by Princess Elizabeth, later Elizabeth II, and her husband, Prince Philip, Duke of Edinburgh.