World's Fastest Mobility Scooter Hits Record 173 km/h

The garden-variety Days Strider model was designed to go 13 km/h, so naturally the pair added an 80-horsepower, four-cylinder, liquid-cooled Suzuki motorcycle engine. That made the chassis and tires woefully inadequate, so they also redesigned the frame and added go-cart wheels. "But that's not really a mobility scooter anymore," you may say.

Well, the Guinness folks specify that "from the outside the vehicle must appear like a traditional motorscooter. ... [but] the engine may be modified or replaced in a way that seems suitable to gain a higher speed." With Hine at the wheel, the run actually happened in August 2014, but it took Guinness quite a while to certify the feat. The official world record of 173 km/h was measured as an average over a quarter-mile stretch of the test track, and handily beat Colin Furze's old record of 115 km/. Judging by the wheelie bars, Pops could take any comers in a drag race, too.