Ferrari World in Abu Dhabi claims that its Formula Rossa rollercoaster is the fastest in the world. It apparently accelerates riders to almost 150 mph as they leave the start gate. Judging from the flattened faces of the riders in this video clip, it certainly starts off with a bang!
I'm sure it's great fun for aficionados of such things, but with my fused spine and other infirmities, I think I'll leave it to a younger generation . . .