I have traveled on that road by bus, and the only road in the US that seems similar to me is the east side of Tioga Pass going up from Nevada to Yosemite. It is a scary road and an accident should not surprise anyone.
I live near that highway. Tioga Pass (SR 120) heads west from Lee Vining, California on Highway 395 into Yosemite Park. It is a very narrow and winding road, not for the faint hearted.
If you're into speed, I highly recommend that road!
A person could maybe get up to 45 there.
Oh, and if you don't stop at the end you'll end up on the flats of what used to be Mono Lake.
Another great downhill in that area? (100 miles away): The road to Whitney Portal.