George Russell warns of qualifying "issue" as traffic threatens early exits

George Russell has warned that traffic will pose an issue during qualifying at the Mexico Grand Prix. He explains that the short and twisty track of the Autódromo Hermanos Rodríguez will leave drivers vulnerable to an early exit if their timing isn't perfect. 
FP1 saw the Mercedes driver watch from the grandstands as he slipped between fans disguised in a lucha libre mask. 
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