
Pit crew work for Red Bull Racing Tag Heuer driver Daniel Ricciardo of Australia during the first practice session of the Formula One Monaco Grand Prix in Monaco, on May 25, 2017. (Xinhua/Michael Alesi)

Pit crew work for Red Bull Racing Tag Heuer driver Daniel Ricciardo of Australia during the first practice session of the Formula One Monaco Grand Prix in Monaco, on May 25, 2017. (Xinhua/Michael Alesi)