Look at some of the most promising ideas in mobile computing.

Hot Prototypes: Tomorrow's Coolest Gadgets Today

We searched the development labs and drawing boards of Silicon Valley and beyond to give you a look at some of the most promising ideas in mobile computing.

Hot Prototypes: Tomorrow's Coolest Gadgets Today

Hot Prototypes: We Have Designs on Tomorrow's Coolest Gadgets Today // Cario Dashboard Computer (Image courtesy of Anna Lopez)

Cario Dashboard Computer: Move Away From the Car, Sir
Cars and computers go together like … cars and collisions. But how do you conveniently add a touch-screen laptop to your automobile? Industrial designer Anna Lopez suggests going with a laptop design that features a full fold-over counterweight base, and a touch-screen to dangle from the central column of the steering wheel. And you thought drivers talking on cell phones were a road menace!

Hot Prototypes: Tomorrow's Coolest Gadgets Today

Hot Prototypes: We Have Designs on Tomorrow's Coolest Gadgets Today // Solar-Powered Netbook (Image courtesy of Nikola Knezevic)

Solar-Powered Netbook: Sunlight Surfing
Right now, you'd need a lot of solar panels to charge a typical laptop. But as netbooks get smaller and use less energy, and as solar panels get more efficient, designer Nikola Knezevic is dreaming of a small solar panel that fits neatly on part of the case and supplies enough power to keep you and your machine working all day long. The technology for a lunar-powered netbook for night owls is likely to have a longer development cycle.

Hot Prototypes: Tomorrow's Coolest Gadgets Today

Hot Prototypes: We Have Designs on Tomorrow's Coolest Gadgets Today // IN Reader (Image courtesy of Seon-Keun Park)

IN Reader: A Newspaper-Size E-Newspaper
Winner of a bronze medal at the IDEA 2009 awards, the IN features a thin, flexible "sheet" for reading news. Park it in the charging cradle (which doubles as a wall clock) overnight; then pick it up in the morning to read updated news from the source of your choice. You enjoy all the convenience of reading a broadsheet without incurring the ink-stained fingers, and without all the cost and waste of paper.

Masc Design Chukka Music Player: Kinetic Audio
The Chukka concept for a portable music player solves two problems at once. First, by using piezoelectricity, it turns kinetic energy into an electric charge -- so you'll never find yourself stuck without tunes while waiting at a bus stop far from home. Second, it gives you something productive to do with your hands, especially if you are prone to snapping your fingers or drumming them on any available surface while listening to funky tracks. Transforming that nervous energy into music-playing energy transforms your twitchy tics into extended battery life for your player. And while spending hours perfecting your Chukka-twirling technique may not do anything for your polo skills, it may give you a huge advantage if miniature nunchaku ever becomes an Olympic sport.

Compenion Tablet PC: Slender and Smooth
Designer Felix Schmidberger's Compenion concept takes tablet technology to a new level, with a sliding display, smooth backlit keyboard, a digital projector and a motion-sensing pen stylus. By the time a manufacturer actually assembles a product with all these features, it will surely be running Windows 7 and not Vista.

Napkin PC: The Computer as Sketchbook
Banking on inexpensive e-ink displays and ever-smaller electronic components, designer Avery Holleman conceives of a computer that encourages spontaneous creativity as handily as a napkin does. A base station charges and houses the processor, and a stylus takes the place of a mouse. The display is persistent, so you can arrange multiple sketches and notes across a table willy-nilly. Genius!

D-Roll Laptop: Totally Tubular
Flexible displays mean exciting new product designs that can look beyond books for inspiration. As a student at Purdue University in Indiana, Hao Hua came up with a design for a laptop that rolls up into a shape similar to that of a mailing tube. The screen and keyboard slide out, and the open design relies on airflow to keep the electronics cool and quiet. A built-in shoulder strap provides a fashionable and convenient way to carry the machine.

Panasonic Hydrogen Fuel Cell Battery: Elementary Power
The idea of using hydrogen fuel cells for power has been popping up since the George W. Bush administration, and companies like UltraCell tend to stress their usefulness in military operations. The underlying idea is that a small device would convert methanol into electricity to charge the internal battery. Unfortunately, companies (like Toshiba) that have displayed prototypes must deal with safety issues related to adding inflammable hydrogen and methanol to occasionally explosive lithium-ion batteries in an electronic device resting customers' laps.

Kyocera Eos: A Fold-Up Phone With Flair
Digital convergence promises to make voice just another stream of data, increasing the difficulty of distinguishing a "phone" from a multipurpose portable computing device. Many designs coming down the pipeline today look like iPhones, with maybe a sliding keyboard thrown in. But Kyocera designer Susan McKinney's Eos prototype for a trifold, wallet-size phone is a breath of fresh air. Its main feature when folded flat is a beautiful, large OLED display. When you unfold the upper third, however, a keyboard and screen present themselves. The device looks as elegant as anything designed by Apple, and the design seems closer to revolutionary than simply evolutionary. No word from Kyocera on whether (as the image above suggests) the Eos can also function as a lawn sprinkler attachment or an ant stake.