Just got my RX400h 4 days ago. Love it, but I have already noticed the optical distortion. I thought it was my glasses until I saw this thread. I notice it when going down a hill and looking up towards the next hill through the upper portion of the windshield. It was rather strange. When I got to flat roads again, all was fine. I haven't driven the car for a long enough time to find out if it will give me headaches or whatever so I don't know if it will be a problem. Any feedback from Lexus since the last post?
I live in the one hilly area of FL, if I took it back to the closest dealership in Tampa, which is flat, they would think I was nuts.
Great car though