He drove like a man possessed - some thought by demons. His ruthless ambition provoked condemnation from critics, among them Prost who accused him of caring more about winning than living. When Senna revealed he had discovered religion Prost and others suggested he was a dangerous madman who thought God was his co-pilot. "Senna is a genius," Martin Brundle said. "I define genius as just the right side of imbalance. He is so highly developed to the point that he's almost over the edge. It's a close call."