Frog Design is best known for collaborating with Apple on many of its iconic computer designs in the 80s and early 90s, but the firm's work was hardly limited to Macintoshes: the Frog FZ750 is one of the more wild experiments ever to come out of founder Hartmut Esslinger's imagination. The Yamaha-based two-wheeler headed from Frog's studio this month to become a part of the San Francisco Museum of Modern Art's permanent collection, and Frog's blog takes a look back at how it came to be.