 Complete the following phrase:  In January 1955, Hawthorn joined the Jaguar racing team, replacing Stirling Moss, who had left for Mercedes. Hawthorn won the 1955 les 24 Heures du Mans following what has been described as an inspired drive in which he set a lap record of 4 minutes and 6.6 seconds during a three-hour duel with Fangio in the early stages. However, the race was marred by the worst disaster in motor racing history, a 