Last week, Hoffmann came into the Popular Science office and brought with him the Ryno. A couple of us rode it around the halls of our floor, people pulling off their headphones and peeking behind corners to see what was going on. It felt a little weird getting on the Ryno at first – there's no gas pedal or normal brake. You propel it by leaning forward and go reverse by leaning back. To steer, it's more about rotating the hips than twisting the handlebars. Hoffmann guided me on my first couple of rides down the hallways, kind of like learning how to ride a bike. But once I got the hang of it, I pretty much felt like I was riding a motorcycle owned by the Red Power Ranger.