At the start of the race, J.J. Lehto's Benetton did not move. Pedro Lamy, starting from further back on the grid, had his view of the car blocked by other cars and hit the back of Lehto's car, causing bodywork and tyres to fly into the air. Parts of the car went over the safety fencing designed to protect spectators at the start-line causing nine people to be hurt but not very much. The incident caused the safety car to come out on track, with all the drivers still in the race staying in the same place behind it while going at a slower speed. During this period, as a result of going at slower speeds, tyre temperatures dropped. At the drivers' briefing before the race, Senna, along with Gerhard Berger, had expressed concern that the safety car (which only came into F1 in 1993) did not go fast enough to keep tyre temperatures high. Once the track was reported clear of pieces of car, the safety car went back into the pit lane and the race started again, with a rolling start. On the second lap after the restart, with Ayrton Senna leading Michael Schumacher, Senna's car left the road at the "Tamburello corner", and after slowing from 190 miles an hour (306 kilometres an hour) to 131 miles an hour (211 kilometres an hour), hit the concrete wall.