British inventor Colin Furze is famous online for his outrageous and ridiculous hacks and inventions. He often takes everyday things and turns them into epic homemade inventions, such as his wrist flamethrowers. For his latest project, he took a common go-kart and turned it into a mental jet-kart! That’s right, he put two jet engines on the little kart and hit 60 mph. It could probably go faster, but he ran out of road.