Tracking your car by cell and e-mail

Here's something that might appeal to your fretful or data-loving side: a service that alerts you if your car is stolen — or being driven too fast by the teenager who borrowed the keys.

Among the nearly 70 emerging technologies on display this week at the DEMO conference is a system from Chandler, Ariz.-based Inilex Inc., which uses global-positioning satellites to track the location of customers' cars and deliver a bevy of other information.

The Inilex "Kepler Advantage" device, sold through car dealers for $600 to $1,100 plus a monthly subscription, looks like a walkie-talkie and gets stowed covertly under the dashboard.