Haha, yes, it works breaking necks!

The slide was open for only a month in 1985 before it was closed at the order of the state’s Advisory Board on Carnival Amusement Ride Safety, a highly unusual move at the time. One worker told a local newspaper that “there were too many bloody noses and back injuries” from riders. Some early riders came back with lacerations to their bodies; when the ride was closed to determine what had caused them, teeth that had fallen out were found lodged in the interior walls. A former Navy physician found that riders were experiencing as much as nine Gs of acceleration as they went through the loop.

https://en.m.wikipedia.org/wiki/Action_Park

I would say “work” is a relative term here.