Ferrari's Sebastian Vettel gave Max Verstappen a taste of his own language at the Brazilian Grand Prix on Saturday when he smilingly suggested the Red Bull's qualifying speed was suspicious. Verstappen, who qualified on pole position for Sunday's race at Interlagos, angered Ferrari at the previous round in Texas when he appeared to accuse the Italian team of cheating to gain engine performance. Vettel, who joins the 22-year-old Dutch driver on the front row, said on Friday that Verstappen's comments were unprofessional and immature.