Progressive offers discount if you let its robot ride along

Would you be willing to let an insurance company electronically monitor your driving habits in return for a possible 25% cut in your premium? That's the deal now offered in 19 states by Progressive Insurance, as it works to take its MyRate program national.

The company uses three criteria for the MyRate discount: defensive driving practices, low annual mileage (under 10,000 miles), and little driving after midnight.