John Allen, who was the president of the Philadelphia Toboggan Company, gave Urbonas the idea. Allen wanted an "ultimate" roller coaster that "sends out 24 people and they all come back dead". Urbonas took Allen's idea and designed the roller coaster. Urbonas said the roller coaster would make its passengers unconscious before killing them. It was criticized by the anti-euthanasia association Care Not Killing.