At around 1:51pm on the 2nd of June 2015 at the Alton Towers theme park in the UK, a combination of factors lead to a fully-loaded car on the Smiler rollercoaster crashing into an empty stationary car at speed. This incident was the worst rollercoaster crash in the history of the park, and resulted in serious, life-changing injuries for several of the passengers on board. It is down only to good fortune that nobody was killed.