I believe this layout would be viable. It would be a very interesting "8" circuit to guide. I believe the circuit could be 9.700 kilometers. The crossing could be done like this: Seaside to Gardens transition: The transition curve of Seaside's main straight line would maintain the same level of terrain until it joined with the large Gardens curve. Visually, it could be placed fenced on the shores of the transition line between Seaside-Gardes, such as Suzuka and Watkins Glen. The first curve would be made at high speed, without reduction. The second would obviously have to be reduced a little. At the tangential margin of the first curve would put gravel. Gardens to Seaside transition: This would be more interesting the geography. Just past the twenty meters, after leaving the main straight line of Gardens, there is a steep descent to pass through a tunnel under the another transition path. Then a rising corkscrew would be performed to return to Seaside. In both the original and the reverse sense, we would now have two corkscrews. The first would be two uphill corkscrews, and the second two downhill corkscrews. It would be emotional, mainly because it would allow multiple overtaking in X. Lastly, another alternative layout could be adopted for Gardens. In Gardens's harpin, the curve would be extended to join directly to the main line. This would provide two Seaside Gardens circuits. Besides that first one, this second one here: I think this could be 8.100 kilometers.