Fastest bathtub

Working over 300 hours between September 2014 and April 2015, Swiss engineer and racing driver Hannes Roth created an eye-catching contraption by attaching a bath-tub onto a go-kart chassis and fitting a four-cylinder Yamaha R6 engine with 120 hp into the basin, along with a driver's seat. Dual exhaust pipes were fitted to the back of the tub, where a full shower head, complete with scrub brush and functioning camera at the top, were installed. After a first successful public appearance at Bergrennen Reitnau hill climb in June 2015, Roth took his motorized bath-tub to the Dynamic Test Center in Vauffelin, Switzerland, where an average speed of 186.82 km/h (116.08 mph) over his two fastest runs was officially verified on 6 May 2016. In his seventh run, Roth achieved a maximum speed of 189.9 km/h (118 mph).