Who is winning F1's development war in Spain?

Who is winning F1's development war in Spain?

All eyes were on major upgrade packages in the F1 pitlane at Barcelona on Friday, but which teams have done the best job, and how do Mercedes and Ferrari now stack up?

"Any team will always try to improve. There's always a lot of talk before we start in Europe - that's kind of been tradition for years and years. It's talk but we'll see what the end result is on Sunday. We just have to get the best out of the package and I'm sure we'll have a package to fight all the year."

Kimi Raikkonen is never particularly interested in trying to read into Friday practice form during a grand prix weekend, but the advent of new aerodynamic regulations for 2017 - and the intense car development those rules are expected to facilitate - has still thrown extra focus onto Friday's running at Barcelona, as everyone cranes to see what Formula 1 teams have done to their cars ahead of the traditional start to the European leg of the F1 season.

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