F1 United States GP: Follow FP2 at Austin with live timing

Weather watch

It's a bit warmer compared to FP1; 29C air temp, 42C track. A warm day, then, as FP2 is about to get rolling. 

Cadillac running experiments in FP1

During the team principals' press conference, Cadillac boss Marcin Budkowski explained that Cadillac's declared updates for this weekend were actually part of some exploration work for next season's car - which took place in FP1.

The team had a revised floor fence geometry, plus some cooling louvres to try. "It’s a tough one because, as the others mentioned, we stopped developing this year’s car," Budkowski said. 

"We brought some parts here that are actually more of an experiment for next year’s car that we were running on Colton’s car, and then doing some set-up work on Valtteri again, exploratory, not directly intended at this race, but just to scan the field of the set-up possibilities of the car, gain some valuable knowledge. And this is the kind of thing we’re doing for us as a new team. "

Photo by: Rudy Carezzevoli / Getty Images

Ferrari's updates

Both Ferrari drivers played down the scope of the team's latest updates - Lewis Hamilton suggesting that they were worth less than a tenth of a second.

So, why bring them? We've explained why. 

FP2 at Austin coming soon...

And we're back - thanks for joining us again, as we prepare to go through FP2 in all its glory at the Circuit of the Americas. 

We've got our 'normal' field back in service, as Sergio Perez takes his Cadillac back from Colton Herta - the American putting together some laps in front of his home crowd.

Without further ado, let's get going. 

Andrea Kimi Antonelli, Mercedes

Photo by: Anni Graf - Formula 1 via Getty Images