They replaced the exhaust system on three cars.

Helmut Marko: Norris's time surprised me Lando Norris topped the times in the second free practice session in Las Vegas. Norris’s advantage over Max Verstappen was half a second, and such a speed difference raised questions for Red Bull’s motorsport advisor Helmut Marko. Ocon is feeling the pressure as Bearman spearheads Haas' efforts. Formula 1 | Esteban Ocon is facing significant pressure at Haas, as the team is engaged in a valuable late-season battle for sixth position in the constructors' standings. Felipe Massa is pleased with the court's decision. Following preliminary hearings, Judge Robert Jay dismissed Felipe Massa's lawsuit against the FIA but upheld the suit against Bernie Ecclestone seeking £60 million in compensation. The decision satisfied the former Ferrari driver, he said in a statement posted on social media. F1 resolves legal disputes with Las Vegas businesses. Formula 1 | Various businesses in Las Vegas that had initiated lawsuits against Formula 1 due to losses incurred from the first two editions of the Grand Prix have now (…) Isola: The condition of the track was rapidly improving. Pirelli are satisfied with the performance of the tyres in Las Vegas. After the session was moved two hours earlier, it wasn't as cold, and the condition of the asphalt quickly improved… Massa and FIA both proclaim victory in the 'crashgate' incident. Formula 1 | A state of confusion - along with conflicting assertions of victory - arose following the High Court in London’s decision regarding Felipe Massa's lawsuit concerning the 2008 'Crashgate' (…)