Taylor Swift helps U.S. Grand Prix to a record crowd

Sunday's U.S. Formula One Grand Prix reversed a trend of declining audiences with its biggest crowd yet, according to organizers who said 269,889 attended over the three days at the Circuit of the Americas. The numbers were boosted by singer Taylor Swift holding her long-awaited first concert of the year on Saturday night after race qualifying, with some 80,000 watching. State subsidies, which the circuit needs to keep the race on the calendar, are based on a formula for calculating how much eco