Science YouTuber and former NASA engineer (spent 7 years working on Mars Curiosity Rover) Mark Rober built this rocket powered golf club and the whole project is awesome to watch and learn from.
This rocket powered golf club that can swing at 150 MPH. Instead of just showing the final build, he wanted to walk through the engineering design process. He had failed in 6 different ways before eventually getting it just right. He explains that his friend Destin came and helped out and shot some amazing high-speed shots on his nice Phantom camera.