Robin Williams made generations laugh and cry through his work as a comedian and actor. And during his life Williams was also an avid bike collector, adding rare, custom made, and sometimes bikes right off the rack to his extensive lot. Williams was also a fierce advocate for people with disabilities, and this auction of his bicycle collection honors that advocacy. Robin Williams' Bicycle Collection features nearly 100 bikes with prices ranging from $1,000 to over $25,000. The bicycles were donated by his children, and the proceeds will benefit the Challenged Athletes Foundation and Christopher & Dana Reeve Foundation.