What a fabulous track! I can't comment on the realism, but this is a real high-speed rollercoaster, with long sweeping turns that somehow require a very precise line to get the best exit, despite the relatively wide track. The corners have a great flow one into the next, and there always seems to be a little crest or tightening to challenge the driver.
The track is also very scenic, unraveling ahead through your windscreen, believably integrated into the surrounding landscape with some great views and plenty of scenery, making each corner feel distinct, easy to learn, and with a real sense of place.
I've been running a 512BB with CS tyres, giving some fantastic battles with the AI; I'm sure it would be great online too.