There Will Never Be Another Ayrton Senna

Why will there never be another driver like legend Ayrton Senna? Senna was known for being a fierce competitor and renowned for his ruthless and risky maneuvers on the Grand Prix circuit. But what made him so special, that even years after his tragic accident, he is still one of the most famous drivers of all? Why has Ayrton Senna changed F1 forever?