Excerpts from Associated Press story:
The Schmidts use a service called Teen Arrive Alive, one of a few companies
that work with Nextel wireless phones and a tracking service from uLocate
Communications Inc. [This lets parents track where their children are driving and how fast.]
Other devices that track on-the-go kids include the Wherifone, a specialized
locator phone that uses the Global Positioning System, and the CarChip, a device
about the size of two nine-volt batteries stacked together that, installed in a
vehicle, monitors speed, distance and driving habits.