By E. EDUARDO CASTILLO and MARIA VERZA, Associated Press MEXICO CITY (AP) — A decision to change cars to get closer to a station exit may have saved Erik Bravo, a 34-year-old financial adviser who survived the collapse of an elevated line in Mexico City's subway system that killed 25 people and injured around 80. Bravo said Thursday that he and two colleagues from work were accustomed to taking the