Qualifying changes for Austin Formula 1 has had to modify its qualifying format after financial problems ruled the Caterham and Marussia teams out of Sunday's U.S. Grand Prix while Red Bull‘s Sebastian Vettel is set to be sidelined by an engine penalty. Stewards said in a statement on Thursday that the slowest four cars in the first session would play no further part in qualifying with the next slowest four also dropping out in the second phase. That will still leave 10 drivers fighting for pole position in the final phase. Previously, the slowest six dropped out in each of the first two sessions with the Caterham and Marussia cars usually in the initial group. Caterham and Marussia...
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