For those asking why is there nothing like this in the US:

Six Flags Great Adventure in NJ has Kingda Ka, which happens to be the tallest in the world, and the fastest in the US.

I've been on it a few times and can attest to it's awesomeness. Check the stats:

-0 to 128 mph in 3.5

-45 Stories High

-456 ft high

-129 ft camel hump (experience a second of weightlessness)

-90* quarter turns

[www.sixflags.com]