What goes 173 mph at 10,000 feet that you ride like a motorcycle? It's either a Star Wars speeder bike, which doesn't exist, or this hoverbike invented by some Australian dude, which actually does. And you don't even need a pilot's license to fly it. Chris Malloy's prototype hoverbike has so far not done anything but hover while tied to the ground, but that is in no way stopping its designer from making all kinds of wildly optimistic projections about its performance and availability. Expect this thing to be able to travel at upwards of 170 mph, and you can...