Navigating to the least expensive fill up. Bloomberg Boot Camp, a report on today's technology. It's one of the lastest trends popping up in some portable navigation devices…the ability not only to help you find a nearby gas station…..but the ability to tell you which ones are the cheapest. TomTom is adding that capability to its 920 devices. President Jocelyn Vigreux….says the information can be downloaded through a Bluetooth connection to a mobile phone…or by connecting to the TomTom Home service through a PC…

"Which basically allows the TomTom users to download onto their device fuel prices at the pump. And they can then decide to travel to the cheapest, the closest gas station to fill up. So I'm sure it's going to be a service that's going to become very handy."

On the down side…it won't be free. TomTom 920 owners will have to pay 15 dollars a year for the service. TomTom isn't alone….Garmin has partnered with Microsoft to include MSN Direct on some of its devices. While TomTom in number one in the world in portable GPS sales…it has trailed Garmin in the U.S. There's plenty of room still for both companies to grow…

"I would say, is just shy of ten percent on penetration."

TomTom's Jocelyn Vigreux. Bloomberg Boot Camp, I'm Fred Fishkin.