Road & Track sent American F1 hopeful Alexander Rossi around the Circuit of the Americas in a Corvette ZR-1. I find it easier to get a feel for the track from the perspective of a street car instead of watching it in fast-forward from an F1 car. In a recent interview with Cycle World Magazine, MotoGP rider Ben Spies gave some of his insights on the track. He said that the uphill hairpin Turn 1 is great for spectators but really dangerous for the racers because if somebody messes up, they take out a lot of people. He then said the fast esses, Turns 3-6, are the hardest part of the track with the triple right, Turns 16-18, being the easiest since you can treat them all as one constant turn. Spies says the track is awesome but he wishes there was a high-speed fourth gear turn in it somewhere. The footage of Rossi starts with an easy out-lap and then two hot laps from different camera angles.
Source: Road and Track on YouTube