Southwest Gas is one of the first companies to roll out Itronix's powerful GoBook III rugged laptop. So far no has reported cooking quesadillas on them.

"Quesadilla cookers" was the nickname given to the older GoBook II models, mounted in front of the windshield in hundreds of trucks and cars used by the gas utility's customer service reps, meter readers and construction crews. In the searing summer heat of the Southwest, coupled with hot-running Intel chipsets, the laptops seemed to be hot enough to use as a stove, says Richard McNutt, project manager in the IT department for the Las Vegas utility.

The new GoBooks are using Intel's most advanced Pentium M, the 745, running at 1.8 GHz. But Intel's latest generation runs cooler and demands less power, and for efficiently dissipates what heat it creates. According to Itronix, battery life is 30% greater in the new model, based on the standard battery mark test, up to about 3.5 hours.

But there are other changes in GoBook III, some of them long pushed by Itronix's customers. An important change for Southwest Gas is an optional integrate GPS radio chipset, picking up satellite signals to pinpoint a truck's location. Previously, employees relied on a separate GPS device that was frustratingly sensitive to vibration. Vibration is common in the Southwest where the utility's trucks often are in desolate areas with unimproved roads.

McNutt has high praise for Itronix' intgegrated GPS. "It's more reliable, it picks up more satellites, and the client software tells us a lot more about the signal reception," he says.

Another key change for the utility is the laptop's 12.1-inch color display that's bright enough to be seen clearly even in the desert sunshine. "It's very noticeable," McNutt says. "People got excited being able to see the text on work orders and read [onscreen] maps easier."

The GoBook III comes with a built-in WLAN NIC: the Intel PRO/Wireless 2200 BG, which supports both 802.11b and 11g in the 2.4 GHz band. Southwest Gas uses the WLAN connection for data synchronization, file transfers and software updates. Crews park their vehicles in the dispatch yards at the end of their shifts, where the GoBooks can connect to a WLAN access point. Using that connection, the IT group automatically updates up to 1,000 of the new models every night.