This term "telematics" is used a lot. What does it really mean? I saw a comment from an old Berkshire AGM where it was mentioned that about four or five years ago, 90% of new business for GEICO included telematics data input. How effectively has GEICO used telematics in your experience?

I think GEICO used it reasonably well. I'm not sure I fully agree that telematics is what set Progressive apart from others. They didn't have the lowest rate, yet they were still growing a fair number of policies. If telematics was the ultimate solution, everyone would be growing at the rate Progressive is. So, is it telematics or something else? They've clearly figured out something unique.