Charles Leclerc sends ominous message as Colton Herta takes huge step towards F1 in Mexico FP1

Charles Leclerc was quickest in FP1 at the Mexico City Grand Prix, but the most significant running went to Colton Herta at Cadillac.

Charles Leclerc topped the first free practice session at the Mexico City Grand Prix, going six-and-a-half tenths quicker than Kimi Antonelli in second.