On Thursday in Austria, both Lewis and George noted how the recent trackside mood has transferred to the factory. Lewis said: "There is a great energy in the team that we feel we have the direction that we want to be working towards.
"You can see that the people in the factory have a spring in their step.
"It is always a good feeling when you see the hard work from everyone paying off."
George added: "The team have done a great job in bringing developments through earlier than expected.
"The last few races have been positive for us, and we are excited to be back in the mix."
Those developments to W15 have brought about an encouraging upturn in fortunes. In addition to the first two Grand Prix podiums of the season, there was also a pole for George in Montreal.
More than a third of the team's points for the season have been secured in the past two races.