Thanks to Fat Boy Biking for this: a human powered spud gun. Littleton, Colorado rocket scientist Bill Llewellin is a founding member of the Denver Mad Scientist club and likes to build all kinds of human powered contraptions from garage sale parts.
See the video of the spud gun in action.
While we’re talking geeky gadgets, Bike Hugger has posted a handful of reports from the Consumer Electronics Show, where Vegas traffic is so gridlocked and parking so unavailable that bicycling is the only way to travel.