While much of the 3D buzz at CES was about TVs and camcorders, I was equally impressed with a different kind of 3D.

The Swedish company C3 Technologies demonstrated its photo-realistic 3D maps, which are likely turn up in next-generation mapping programs. So far they have maps of London, Barcelona, Stockholm, Copenhagen, Oslo, Boston, Miami, and San Francisco. By April, they expect to add another 22 cities.

How are these maps different from the ones you might find in Google Earth or your favorite GPS navigation program? They’re much more detailed and aren’t flat like your typical map. These maps are three-dimensional in the sense that you can zoom up and view each side of a building in great detail. The company might photograph a city using 200 separate flyovers in order to recreate the buildings and streets from any angle. Not surprisingly, C3 Technologies was spun out of the aerospace and defense industries.

The demo I saw at CES ran very smoothly with realistic shadows, colors, and shading. You can’t buy this technology at the moment, as the company is currently in the process of licensing the maps and rendering engine to software developers. The software development kit currently supports the Android, iPhone, and iPad. There’s also a Web kit for developing plug-ins for Firefox, Explorer, Safari, and Chrome.

It shouldn’t be too long before you can see – and explore for yourself – these incredible virtual cities.

If you own the 3G version of the iPad, you already have the hardware for a first-class GPS navigator. The large touchscreen, built-in GPS, and instant-on capability are just waiting for the ideal turn-by-turn navigation app.

ALK Technologies’ CoPilot Live HD North America comes pretty close to fitting the bill for anyone who doesn’t have to depend absolutely on GPS navigation, such as an ambulance driver or police officer. While CoPilot Live HD does have its limitations, you would be hard pressed to find a better value given its rich set of features.

You do need to have the 3G version of the iPad in order to run CoPilot Live HD. The program takes up a considerable amount of space (1.34 gigabytes) to store all the needed maps, street names, and points of interest for North America. So why can’t you use the Wi-Fi version if the maps are preloaded? Only the 3G version has the GPS chip, and without the GPS chip, the iPad wouldn’t know where to place you on the map.

Because the maps are stored locally, and not downloaded on the fly, the onscreen views update smoothly as you travel by car. When driving alone, and unable to look at the screen, I was able to use the program’s voice directions for a satisfactory experience. You’ll be prompted well ahead of time with clear and concise directions. Another option: Have a second person watch the screen to help direct the turns. Or you could purchase a dashboard mount for your iPad.

The app has a wealth of features and settings, including the ability to enter multiple stops within a single trip. You can manually enter a street address or pull the information from a contact in the iPad’s address book. There are single-view and dual-view options with either a 3D or 2D map. And the supported live services include local weather, traffic, and fuel prices.

All this costs just $29.99. That’s a one-time fee that provides you with monthly map improvements and quarterly full-map updates for the U.S. and Canada. So what’s the downside?

Because CoPilot Live HD offers so many features, it can be difficult to maneuver (you may need a copilot for your CoPilot). The interface doesn’t help, as it isn’t logically arranged. Case in point, I found a cool feature where you could demo a trial run through a programmed trip, but I haven’t used it since, because I couldn’t find it again.

That may be nitpicking for a turn-by-turn app that costs only $29.99. CoPilot Live HD is an incredible bargain that requires a little extra effort to figure out how to get from here to there. All in all, that’s not a bad trade-off.

I had a chance to try out HP’s iPAQ 310 Travel Companion at CES. It’s a first-rate GPS device with excellent graphics and a fast processor. The bright 4.3-inch LCD touch screen has an 800×480 pixel resolution with a 16-bit color depth. In addition, this is the first GPS product to use the SiRF Titan 600MHz ARM11 dual-core processor. As a result, the maps are detailed and shift quickly to stay in sync with your car’s movements. The text-to-speech directions worked well with a minimum of oddly funny pronunciations.

Unlike with some competing GPS products, you won’t be stuck with out-of-date maps and points of interest. Connect the 310 to your PC via a supplied USB cable to update the on-board data via the Internet. You can use the touch screen to explore areas outside your field of view. Use the side-mounted dial to incrementally change from a close-up 3D perspective to a bird-eye 2D perspective. Currently, 40 cities have low-resolution 3D buildings that look very cool as you drive by them. Otherwise, the streets are limited to a ground-level 3D perspective that’s still effective for providing a sense of scale and direction.

Other features include an SDHC-compatible SD-card slot for playing video and audio files, several games, and Bluetooth for using the 310 as a hands-free answering system for your cell phone. The 800×480 resolution screen is great for video, though it’s fairly picky about which types of AVI files it can play. Even with the fast processor, it became bogged down with video saved at a high bit rate. Those limitations aren’t a deal breaker, mostly because the media player is an add-on, not the main attraction. It’s the GPS capabilities that make the 310 really shine.