Upon hearing the name "Solar Bike Fujin," designed by a Japanese space rover engineer, we leaned back in our chairs and dreamed up dramatic images of a futuristic bicycle dashing across the void before cruising the turbulent surface of the sun . However, when we watched the rest of the video below we realized that the bike will instead conquer rather more terrestrial routes at speeds well short of escape velocity (72km/h, or about 45mph). It is, however, powered by the sun, able to run 220km on a full charge or, thanks to its aerodynamicaly profiled solar wings, can give itself 50km worth of juice just by sitting in the sun while you put in your 9-to-5. This is helped by incredibly low rolling-resistance wheels, the front one able to keep rotating for 20 minutes on its own with just a gentle spin, technology borrowed from creator Mr. Yamawaki's Minerva rover that was part of the Hayabusa probe . Hopefully this bike manages to get a little further than that rover did.