After a break of 23 years, Formula One returns to Mexico on Sunday, with Mercedes driver Lewis Hamilton already crowned the champion. The Autodromo Hermanos RodrÃguez in Mexico City will be the scene of the latest race involving 21 drivers. They will do 71 laps on the 4.304 km circuit, for a total of 305 km. Practice takes place today, but all eyes are on the weather again, after the United States GP weekend in Austin was hurt by terrible conditions.

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