1 May 1994:  General view of Ayrton Senna's wrecked Williams Renault after he crashed during the San Marino Grand Prix at the Imola circuit in San Marino. Senna suffered a fatal accident when the steering column apparently sheared leaving the Brazilian helpless as his car speared into the concrete wall at the Tamburello corner. Senna was officially pronounced dead in a Bologna hospital later that afternoon. \ Mandatory Credit: Anton  Want/Allsport