United States GP: HRT Saturday quotes

Narain Karthikeyan - 24th: "Driving was quite challenging in the morning because it was difficult to bring the tyres up to temperature. But things improved a lot in the afternoon with a much warmer track. The tyres and the car performed much better and we managed to put in a few good laps. I think we could still have improved on the last laps but the car suddenly stopped. We had a problem with the fuel pick up that we are now looking into it but we don't expect it to be a problem for tomorrow's race."

Toni Cuquerella, Technical Director: "From the first sessions, all teams have had trouble warming tyres up but in our case it is particularly difficult due to low aerodynamic support. In the morning with the cold track we struggled to put in good lap times and the difference to the fastest time was too big. Fortunately, conditions changed for the afternoon and track temperature rose notably which, together with some set up adjustments, allowed us to get the tyres within the working temperature range. In our case, tyre wear is marginal therefore we expect to go for a one pit stop strategy for the race. We will have to be particularly careful when we start getting blue flags in order to avoid disturbing but also not loosing too much temperature on the way."