US preview quotes: Toyota

"Now I will look to put those behind me with a more positive visit to the venue. The main challenge of the Speedway's F1 circuit is to balance the set-up of the car. We have to reach a good top speed along the banked start-finish straight into the first corner while keeping the car stable through the slow and twisty infield section.

"This season has been a struggle for me but I remain confident that we can turn our form around. We scored a point at Montreal and Toyota has a strong record from its races at Indianapolis so we will hope to give the team a boost with a good result on Sunday."

Jarno Trulli: "Since I've been at Toyota our car has always been competitive at Indianapolis. In 2005 I took pole position and last year I finished 4th despite starting from the pit lane. The Speedway plays host to one of the most important races in the world so it is a special place to drive.

"You can really see how the people are passionate about motor sport. I enjoy the atmosphere both at the circuit and in the town because everyone is so friendly. The Formula 1 track is not particularly technical but it is slippery and we work hard on the mechanical grip in the slow corners to allow us to take off downforce for straight-line speed.

"We've been having a difficult season in 2007 and the Canadian Grand Prix was a very hard race for me but now I'm hoping for a better weekend's work."

Pascal Vasselon - Senior General Manager Chassis: "Indianapolis is best described as two circuits in one. Part of the lap is taken on the oval section with around 23 seconds of full throttle. The rest takes place on the twisty infield section. That obviously leads to a major compromise when it comes to setting up the cars.

"When you do the calculations you see that you achieve similar lap times no matter how much downforce you have. If you run with very high downforce it helps in the infield but makes you slow on the straight. With low downforce the opposite applies. During the race you clearly have to be quick on the straights in order to pass and defend your position so you run low downforce.

"It's one of the hardest circuits of the year for rear tyre wear largely because of the acceleration from the infield section onto the banking. We are not concerned that the issue we faced with the front suspension during practice for the Canadian Grand Prix will reappear.

"Turn 8 at Montreal is unique and we will now have enough time to rectify the issue. We will head to Indianapolis looking to break into the points again to send us away from North America on a positive note."