Bike Washing Machine – an One Stone Kill Two Birds idea from students at Dalian Nationalities University in China. Bike Washing Machine combines a stationary bicycle and drum shape washing machine, while doing work out exercise to burning your calorie, at the same time washing your clothes. When ride this bike, the pedaling motion causes the drum of the washing machine to rotate, tumbling the clothes with water and detergent. If you’re super efficient and the bike creates more energy than it need to power the machine, the extra juice can be stored for future used. The extra energy can also be used to power a small display screen that tracks your stats.