While "happy" to see Williams have made big gains, Robert Kubica is enjoying the much faster Alfa Romeo even more.
The Pole moved from the Grove-based team after a single year of racing back to his original stomping ground in Formula 1, becoming reserve driver for 2020.
And during his second outing in the C39 on Wednesday morning, Kubica posted the fastest time of the day, ending 1.3s faster than his Williams replacement Nicholas Latifi.
“Definitively when you jump from one car which I was driving last year to this year’s car, it makes a big difference,” Kubica said via Formula1.com.
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“I am happy that they [Williams] have made a big step forward, there is a lot of people who deliver a good job there, so it’s nice to see Williams a bit back in the battle.
“But definitely [the cars are] fast, but also fast doesn’t always mean more difficult and actually last year lapping two or three seconds slower was more difficult than now.
“But there is nothing easy in Formula 1 whatever you are driving – Mercedes, Ferrari or Williams there are always difficulties.
“What you have to target is to do your job the best you can and try to extract the maximum from your package.”
As for the situation at Alfa Romeo, Kubica is enjoying being part of the process and sees more to come from the 2020 car.
“I think we have something in the pocket and definitely some new parts coming,” he revealed.
“We did actually improve a few areas where we struggled last week, where me and actually all the drivers’ feelings were that we have to improve and the reaction was very quick.
“It’s still a bit of optimisation I would say, but it’s nice to see the team reacting quickly and trying to… give value to what they say.
“We have more performance still in our car, definitely. As always winter testing is quite active and busy, and then what is also busy is the time after running the car to try to pick up the right stuff and make the right evaluations.”
