Technicians checks a Mc Laren Formula One car driven by Ayrton Senna, on display at the the Imola track, Italy, Wednesday, April 30, 2014. Fans and family members are gathering this week to pay their respects to former Formula One drivers Ayrton Senna and Roland Ratzenberger on the 20th anniversary of their deaths. F1 drivers' chaplain Sergio Mantovani celebrated a memorial mass Wednesday in a packed room beside pit lane at the Enzo and Dino Ferrari track that once hosted the San Marino Grand Prix. (AP Photo/Marco Vasini)
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