7. Spinning Cart Roller Coasters

When we were kids our favorite ride at the fun fair was the waltzer. You know – the one where you get strapped into a circular, spinning carriage and subsequently thrown around a huge circle by a toothless carny controlling a lever. Considering the fact that safety precautions on these rides involve little more than a rusty bar and a sudden belief in God, you’ve gotta be totally nuts to attach one of its deathtrap carriages to a freakin’ roller coaster. But attach it they did, bolting it onto a Wild Mouse roller coaster. This particular example of G-force stupidity, known as the Treetop Twister, eventually – and inevitably – caused a fatality at UK amusement park Lightwater Valley when an unfortunate girl was killed following a computer malfunction when two carts collided. There are various reports of other deaths and casualties in similar such rides around the world.