In 2010 a roller coaster was designed with the goal of killing its passenger. It was made into a scale model by Julijonas Urbonas who stated that the goal of the ride is to take lives “with elegance and euphoria.” Below are further details taken from the Wikipedia page along with the source link.
Source: http://en.wikipedia.org/wiki/Euthanasia_Coaster
Design:
The design starts with a steep-angled lift to the 510-metre (1,670 ft) top, which would take two minutes for the 24-passenger train to reach. From there, a 500-metre (1,600 ft) drop would take the train to 360 kilometres per hour (220 mph), close to its terminal velocity, before flattening out and speeding into the first of its seven slightly clothoid inversions. Each inversion would have a smaller diameter than the one before in order to inflict 10 g to passengers while the train loses speed. After a sharp right-hand turn the train would enter a straight, where unloading of bodies and loading of passengers could take place.
The Euthanasia Coaster would kill its passengers through prolonged cerebral hypoxia, or insufficient supply of oxygen to the brain. The ride’s seven inversions would inflict 10 g on its passengers for 60 seconds – causing g-force related symptoms starting with gray out through tunnel vision to black out and eventually g-LOC (g-force induced loss of consciousness). Depending on the tolerance of an individual passenger to g-forces, the first or second inversion would cause cerebral anoxia, rendering the passengers brain dead. Subsequent inversions would serve as insurance against unintentional survival of particularly robust passengers.
