Free Beer & Hot Wings: This Looks Like Most Terrifying Roller Coaster Ever [Video]
It's a 4D coaster.
What does that mean? It means that while you're strapped into your seat riding along the track, your seat is also flipping 360 degrees independently. Pair that up with a couple of drops that are more than 90 degrees and you've got the future scene of many, many heart and anxiety attacks.
Source: Free Beer & Hot Wings