The Euthanasia Coaster - The Coaster That Kills
A steel roller coaster designed to kill its passengers. In 2010, it was designed and made into a scale model by Lithuanian artist Julijonas Urbonas, a PhD candidate at the Royal College of Art in London. Urbonas, who has worked at an amusement park, stated that the goal of his concept roller coaster is to take lives "with elegance and euphoria". As for practical applications of his design, Urbonas mentioned "euthanasia" or "execution". John Allen, who served as president of the Philadelphia Toboggan Company, inspired Urbonas with his description of the "ultimate" roller coaster as one that "sends out 24 people and they all come back dead".
The concept design of the layout begins with a steep-angled lift to the 510-metre (1,670 ft) top, which would take two minutes for the train to reach. Any passengers that wished to get off could then do so. 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 maintain the lethal 10 g to passengers while the train loses speed. After a sharp right-hand turn the train would enter a straight, where unloading of corpses and loading of new passengers could take place.
In the video you see a man Mark -- a rich and terminally-ill man who wants to die on his own terms. But instead of taking a lethal injection, he decides to use his wealth to create a roller coaster so powerful, it causes cerebral hypoxia -- suffocating the brain ensuring a euphoric death.