Nordisk Cryobank, or better known as European Sperm Bank was looking at environmentally-friendly alternatives to how they could transport their sperm samples to the fertility clinics around Greater Copenhagen. Thus, born the Sperm Bullitt, a bike built from Danish cargo bike producer- Larry vs Harry. Constructed by the Danish company 10 Tons - who specialize in zoological and botanical models, the Sperm Bike is 2.9 meters long and weight 50 kg.

Nordisk Cryobank's CEO, Peter Bower, says, "The first idea was how we could deliver to the fertility clinics in a C02-friendly way. Shortly afterwards followed the idea of a custom-designed bike with a cooling system. Now, six months later, we can cycle around the city on our sperm cell bike. We're always looking for new donors so it's a fine bonus that the Sperm Cell Bike gets peoples attention."