Vitor Meira - We had a vibration with the car after the second...

We had a vibration with the car after the second practice today. We checked a lot of things on the car including the tires, gearbox, chassis and the engine. Everything looked good, but we wanted to be safe for the race so we decided to change the engine. That way we are ready for warm-up and the race. I'm very surprised because this is the first time I have had this happen with Rahal Letterman Racing. We can work out some more things in warm-up and the car will be set to go. The car felt very good in traffic in the practice. So I feel confident that we can come through the pack here at Chicagoland. Some other tracks you couldn't do, that but here it is possible.