A fertility clinic in Copenhagen wanted an easy way to transport biological materials in insulated storage through the city, and so commissioned the construction of the Sperm Bullitt:
The Sperm Bike is, like the company's sperm donations, a Danish product and constructed around the Danish Bullitt cargo bike from Larry vs Harry.
Producing the Sperm Bike was no easy task. It was constructed by the Danish company 10 Tons - who specialise in zoological and botanical models as well as paleontologic reconstructions, including full-size whales and dinosaurs.
With the tail, the bike is 2.9 metres long and fully-loaded with... um... sperm... it weighs 50 kg. About the same as my cargo bike with two kids and a bag of groceries.
If you scroll to the bottom of the linked article, you can find links to images of other unique custom cargo bikes built by the same company.
Link via Marginal Revolution | Photo: Copenhagenize