Complex sentence: Eloy Cavazos, a fellow matador, who was one of Jaime's protégés, was also in the car, but survived, and continued on to have a very long career as one of Mexico's and the world's top matadors.
Split into simpler sentences: Eloy Cavazos, a fellow matador, who was one of Jaime's protégés, was also in the car, but survived. Cavazos continued on to have a very long career as one of Mexico's, and the world's, top matadors.