We'll be honest with you -- IDL Motors' installation at Toy Fair 2008 was a bit short on details, but we're certainly digging what we saw. Apparently, both the Bullet Train & Cars and Z-drive creations were on display, and while the former used linear propulsion to whiz magnet-laden "cars" around a track, the latter enabled similar vehicles to climb steeper slopes than their previous prototypes. Still, we know what you're here for, so click on through to take a peek at the video.

[Via MAKE]

Sure, we all love jet packs. Who doesn't enjoy strapping a gigantic tube of highly flammable fuel to their back and igniting it so it can propel you hundreds of feet into the air? Well, an inventor named Raymond Li has a different idea, one which he's just managed to patent: a water-propelled rocket pack. The new design would use a system of conduits which route pressure to independently pivoting thrust nozzles, while the actual engine, pump, and dangerous gases remain floating on water in a self-contained, buoyant package. It's somewhat unclear if you'll be able to rocket over land using this device (the fact that the engine is water-based would suggest no), though it is an interesting development for jet-pack enthusiasts.

[Via Wired]

While schools in the ACC are certainly making noise on the hardwood, it seems that the Atlantic Coast Conference is also interested in shoving microbots all around your innards. Just days after a team from Georgia Tech envisioned a new internal method for monitoring blood pressure, research conducted at NC State is hoping to cram even more robotic creatures into deep, dark places within your body. A team led by Orlin Velev has discovered that "a simple electronic diode" could spark a new form of propulsion which could power robots and other diminutive devices from a distance. By exploiting "a phenomenon known as electro-osmosis," the diodes can push microscopic material through internal fluids "at speeds of several millimeters per second," which could allow cameras and medicines to reach critical locales that are presently isolated. Of course, there's still a good bit of work to be done, as the prototype device still has become substantially smaller before it will even fit in most of the tiny tubes within your skin, but it's looking more and more like we'll have nursebots shoving spinoffs of themselves into our beings before too long.

[Via NewScientistTech]

Now that humans have shot themselves up into space, frolicked on the moon, and have their own space station just chillin' in the middle of the galaxy, what's really left to accomplish out there? How about cruising around at light speed? Apparently, a boastful group of scientists at the Bae Institute in Southern California feel that they're one step closer to achieving the impossible, as the "world's first photonic laser thruster" was purportedly demonstrated. Using a photonic laser and a sophisticated photon beam amplification system, Dr. Bae reportedly "demonstrated that photonic energy could generate amplified thrust between two spacecraft by bouncing photons many thousands of times between them." The Photonic Laser Thruster (PLT) was constructed with off-the-shelf parts and a bit of fairy dust, and it's said that this invention could eliminate the need for "other propellants" on a wide range of NASA spacecrafts, theoretically savings millions on energy costs and enabling longer missions. So while this may be an incredibly novel idea, the chances of this actually working outside of a laboratory seem relatively small, and make sure we're not the guinea pigs strapped into the first craft that utilizes this mystical method of launching, cool?

[Via Wired]

While ridiculously small robots crawling around in our bodies seems quite painful (and in some cases, it is), a team headed by Moshe Shoham of Haifa's Technion is developing a smoother riding robot to cruise the friendly passageways of the spinal canal. Dubbed the SpineAssist, this low-powered microbot is being crafted to "aid surgeons in performing delicate spinal procedures" by propelling itself through the water-like cerebral spinal fluid and channeling live video / snapshots back to the doctors in charge. Researchers have already engineered the propulsion system, and describe the device as a "free-swimming endoscope" with two actuators and swimming tails that will lug a camera into the fragile depths. Shoham estimates that a few more years of work will be needed to up its payload capacity and shrink it to an appropriate size, but at least someone's working on taking the back aches out of surgery, eh?

[Thanks, William]