You can purchase a Garmin GPS system in Dallas at your local Best Buy. Garmin is probably the most reliable brand out there.
Best Buy
You can learn the difference between a portable garmin gps and a bmw navigation system on the following site: http://www8.garmin.com/products/BMW/. They have a lot of info.
The Garmin navigation system that comes with the most maps would be the Garmin Nuvi 2455LMT 4.3-Inch Portable GPS. It has the most maps of all the GPS systems.
One can purchase a Garmin global positioning system 60 in several different places. The first place that one can purchase a Garmin global positioning system is directly from Garmin' s retail site. One could also purchase a Garmin global positioning system 60 from retailers like Amazon, Target, and Walmart.
One can purchase a Garmin 2720 at a local electronics store such as Radio Shack. You can also find the Garmin 2720 GPS tracking system online at sites such as Amazon or eBay.
You can purchase an alpine gps system at your local Best Buy in Dallas. They usually have a great selection.
Yes you can use a garmin street pilot gps in any vehicle you are driving. If it's not a built in system, you can use a portable one in any car you drive.
The Garmin approach s1 GPS watch is a more portable alternative to the traditional car based GPS system. The portability of the GPS watch is its biggest advantage. Unfortunately it does not have all of the capabilities of a car based GPS system.
The Garmin nuvi 2350LMT is rated 4 out of 5 stars at amazon.com (http://www.amazon.com/Garmin-2350LMT-Widescreen-Lifetime-Traffic/dp/B00407237W)The few complaints I did find had to do with problems updating the European maps.
The screen on a Garmin Nuvi 350 is 3.5 inches, and not much bigger in size than a deck of cards. This is adequate screen space to meet all your needs for a portable GPS Navigation System.
One can purchase a portable public address system from many places. These places include electronic stores such as Best Buy, Radio Shack, or Circuit City.
Some of the features of the Garmin Quest GPS includes handheld and outdoor usage, portable system, map download capabilities, 2.7" screen size, keypads, WAAS enabled, and 12 channels.
Yes, you can purchase a navigation system that is handheld. Garmin makes a great one, you can find all the information here: http://www.grainger.com/Grainger/GARMIN-GPS-Navigation-System-3MNR1