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If you've never heard of Ayrton Senna, prepare to meet a racing legend.

Asif Kapadia's documentary "Senna" profiles the Brazilian driver, a three-time Formula 1 world champion — and the last Formula 1 driver to die in a race. (He was killed in the 1994 San Marino Grand Prix.)

The trailer is from Brazil, where the movie has already screened, so it's partly in Portuguese — but there's enough in English to get the movie's point across.

"Senna" will screen in the World Cinema Documentary competition at the 2011 Sundance Film Festival.