Looks good, doesnt it? Its the official layout.
http://www.motorsport-total.com/news/images_big/67545.jpg
Edit:
I have found a .pdf layout, where you can see the height differences
http://www.formula1.com/assets/pdf/F1%20USGP%20BasicTrack%20LayoutwElevation.pdf
Reminds me a bit of A1GP, Silverstone/Suzuka, Hockenheim and the corner from turkey with those 4 apex's.
http://www.motorsport-total.com/news/images_big/67545.jpg
Edit:
I have found a .pdf layout, where you can see the height differences
http://www.formula1.com/assets/pdf/F1%20USGP%20BasicTrack%20LayoutwElevation.pdf
Reminds me a bit of A1GP, Silverstone/Suzuka, Hockenheim and the corner from turkey with those 4 apex's.