The first turn looks to be about a 500-600 ft radius, second turn is closer to 600 ft.
Assuming a radius of 550 ft, taking the turn at 90 mph would require that your car be able to achieve about 0.98 G. (Rough calculation and assuming local gravitational acceleration constant @ sea level)
Seems doable on street tires with a good setup…
Interesting thing is, just going up 10 mph to take the turn at a constant 100 mph would require a car capable of 1.2 G lateral acceleration (assuming radius above).