New W15 F1 car has ironed out “spiteful” rear end

The team has been working hard on a major car revamp that it hopes will allow Lewis Hamilton and George Russell to take the fight to Red Bull this season. 

And while it knows that its chances of success depend entirely on how much of a step forward the opposition has made, technical director James Allison has revealed some positive early signs about the W15. 

Asked by Autosport about the level of confidence within the team based on some…