Roller coaster enthusiasts, stop your grinnin and drop your linen. Cincinnati's Kings Island has unveiled Diamondback. A 5,282 foot steel maniac with open air seating whipping at speeds up to 80 mph over 10 acres. Careen down 10 vertical drops including the first one at a 74 degree angle from 215 feet. With two helixes and at over 3 minutes long it might remind you of something. The videos are momentarily buggy, but the ride splashes down in 8 months.