US8662513B2 - Recyclable cardboard bicycle - Google Patents

https://www.google.de/patents/US8662513?dq=US+8662513+B2&hl=de&sa=X&ved=0ahUKEwiN14mWv47OAhWoAsAKHa0vBWAQ6AEIHjAA

A human powered land vehicle sufficiently rigid so as to transport a human rider constructed only from palpably recyclable and shreddably recyclable materials.