Formula One teams and stakeholders have unanimously agreed to engine rule tweaks aimed at improving racing and driver safety, starting with the Miami race on May 3.
Formula One's new energy rules face criticism after the Japanese GP, with drivers questioning racing quality and safety ahead of a five-week break.
George Russell put his Mercedes on pole position in Canada for the second year in a row on Saturday with Red Bull rival Max Verstappen alongside on the front row.
Max Verstappen, who could seal his fourth successive championship on Saturday, will line up fifth on the starting grid
Can Mercedes' seven-time world champion Lewis Hamilton add to his record tally of 103 victories?
While 40-year-old racers were relatively common in the sport's early days, they are a rarity in modern Formula One with an increasing emphasis on youth.
Max Verstappen won Red Bull's home Austrian Grand Prix on Sunday while Lewis Hamilton suffered his first race retirement since 2016 and lost the Formula One championship lead to Ferrari's Sebastian Vettel.
Lewis Hamilton won the Monaco Grand Prix for Mercedes on Sunday, nursing his car's worn tyres to the finish in a nail-biting victory worthy of the team's late great Niki Lauda.
Lewis Hamilton won the Mexican Grand Prix for Mercedes after a first-lap scare on Sunday but the Briton will have to wait another week to wrap up his sixth Formula One world championship. Hamilton's 10th win of the season, and 83rd of his career, was also a 100th for Mercedes as a constructor.
Earlier in the day, lawyers representing Patel appealed to the Supreme Court of Brisbane to show mercy to their client during sentencing on Thursday.
The jury had retired to consider their verdicts last Wednesday, after hearing the case for 14 weeks and examining evidence from over 75 witnesses, the six men and six women an ABC report said.
