US Grand Prix track to be fast, difficult
America will return to the F1 calendar in 2012 following a five-year absence at a purpose-built facility close to the city's airport.
In an interview with the official Formula One website, Hellmund revealed that all the fans will have a pretty clear view of the track.
When asked how the circuit will look, Hellmund said: "Amazing! I have conveyed my ideas to Hermann Tilke and Peter Wahl who are the most established racetrack architects of our times.
"The area has natural elevation differences, which promises a fast track with difficult corners. But the most essential thing is that has to be a masterpiece in its suitability for fans. Spectators have to be able to see large parts of the track from wherever they are.
"The layout is just about to be finished and we will present it to the FIA in September."
Meanwhile, F1 boss Bernie Ecclestone says the race will take place "somewhere in June".
"We have to wait and see, but it would be logical to place it close to the race in Montreal and that would mean somewhere in June," he said.