Homemade thrill ride speeds up if you're not scared enough
 

Roller coasters don't care how scared you are, they always follow their pre-programmed circuit to a "T." That gave Dutch artist Daniel de Bruin an idea: What if a ride could measure your fear and amp up the thrills based on that? Since he's also a de...

https://www.engadget.com/2017/04/10/...scared-enough/