Colin Furze is known for building wild projects out of his small garage like his auto rickshaw powered by a CBR600 motorcycle engine. Colin is back with a new project involving a pulse jet powered go-kart. He was able to get the go-kart up to 61 mph before he ran out of room. You can can read more about how he built it on his project build page.
Source: Colin Furze Youtube channel and ColinFurze.com (project page) via Sploid

I thought there were laws to protect people from themselves….LOL
Great idea, glad someone thought of it, Glad it wasn’t me, my wife would have had me committed…
No kidding. I would love to know how fast it could actually go with no limits.